SIM8905A_User Manual_ V1.00 Smart Machine Smart Decision Compliance Information:
FCC Compliance Statement: This device complies with Part 15 of the FCC Rules . Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. This device must accept any interference received, including interference that may cause undesired operation. Product that is a radio transmitter is labeled with FCC ID. FCC Caution:
(1)Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance.
(2)Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment.
(3)This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
(4)Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment.
(5) the modules FCC ID is not visible when installed in the host, if the host is marketed so that end users do not have straight forward commonly used methods for access to remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to the enclosed module: Contains Transmitter Module FCC ID: 2AJYU-8PSA301 or Contains FCC ID: 2AJYU-8PSA301. The following statement must be included with all versions of this document supplied to an OEM or integrator, but should not be distributed to the end user. This device is intended for OEM integrators only. Please See the full Grant of Equipment document for other restrictions. 2 Smart Machine Smart Decision 1. SIM8905A Description 1.1. Summarize SIM8905A is a smart module, which is based on Qualcomm MSM8909 platform. It includes baseband, memory, RF front end and required circuitry to support LTE-FDD. 1.2. Feature Feature Application Processor Memory External memory via SD Implementation Quad ARM Cortex-A7 cores up to 1.1 GHz 32 kB L1, 512 kB L2 cache ARMv7 32-bit architecture 8Gb LPDDR3 up to 533Mhz; (SIM8905AH16Gb LPDDR3 RAM) 8GB eMMC NAND flash SD3.0; Support SD flash devices up to 32GB Operating System Android OS 5.1/7.1/8 Power supply 3.4V ~4.4V Charge management Integrated 1.44 A linear charger for single-cell lithium-ion batteries Display Camera Video performance Audio 4-lane MIPI_DSI, 1.5Gbps each HD(720P), 60fps Primary camera: 2-lane MIPI_CSI, 8MP Secondary camera: 1-lane MIPI_CSI, 5MP Encode:
H.264 BP/MP 720p, 30fps MPEG-4 SP / H.263 P0 WVGA, 30fps VP8 WVGA, 30fps Decode:
H.264 BP/MP/HP1080p, 30 fps MPEG-4 SP/ASP1080p, 30 fps DivX 4x/5x/6x1080p, 30 fps H.263 P0WVGA, 30 fps VP8 1080p, 30 fps
(HEVC) H.265 MP 8 bit 1080p, 30 fps Two inputs that support single-ended configurations Three outputs: earpiece, stereo headphones, and mono class-D speaker driver 3 Smart Machine Smart Decision Voice codec support:
G711; Raw PCM; QCELP; EVRC, -B, -WB; AMR-NB, -WB; GSM-EFR, -FR,
-HR;
Audio codec support:
MP3; AAC+, eAAC; AMR-NB, -WB, G.711, WMA 9/10 Pro Dual cards dual standby LTE Category 4 - 150 Mbps (DL) LTE Category 4 - 50 Mbps (UL) USIM card Transmission rate Temperature range Physical dimension Operating temperature: -25 ~ +75 Storage temperature: -40 ~ +90 Dimension: 40.5*40.5*2.8mm Weight: 10.6g 4 Smart Machine Smart Decision 1.3. Pin F R _ T A B V F R _ T A B V D N G D N G S U B V _ B S U S U B V _ B S U T E D _ S H L _ H P H D N G D N G _ H P H R _ H P H D N G M R E H T _ T A B V S N S _ T A B V 5 8 V 2 _ 7 1 O D L C D A L E S _ E G R A H C 8 V 1 _ 6 O D L 7 1 _ O P G I C T R V X R D _ T N A D N G D N G S S N G _ T N A 8 _ O P G I 9 _ O P G I D N G 0 1 _ O P G I 1 1 _ O P G I 5 9 _ O P G I Y E K R W P 9 9 _ O P G I 8 5 _ O P G I 8 V 1 _ 5 O D L 6 1 _ O P G I D N G 6 4 1 5 4 1 4 4 1 3 4 1 2 4 1 1 4 1 0 4 1 9 3 1 8 3 1 7 3 1 6 3 1 5 3 1 4 3 1 3 3 1 2 3 1 1 3 1 0 3 1 9 2 1 8 2 1 7 2 1 6 2 1 5 2 1 4 2 1 3 2 1 2 2 1 1 2 1 0 2 1 9 1 1 8 1 1 7 1 1 6 1 1 5 1 1 4 1 1 3 1 1 2 1 1 1 1 1 178 177 176 175 174 173 172 171 147 148 MIC_BIAS1 194 193 192 191 MIC_BIAS2 210 209 208 207 170 169 149 179 195 RESET 150 180 196 206 190 168 205 189 167 151 181 197 204 188 166 SIM8905 152 182 198 203 187 165 153 154 199 200 201 202 183 184 185 186 164 163 155 156 157 158 159 160 161 162 VBAT_BB VBAT_BB GND MIC1P GND_MIC MIC2P GND EAR_P EAR_M SPK_P SPK_M GND USB_DM USB_DP GND USB_ID USIM2_DET USIM2_RST USIM2_CLK USIM2_DATA USIM2_VDD USIM1_DET USIM1_RST USIM1_CLK USIM1_DATA USIM1_VDD GND VIB_DRV_N PWM TP_INT_N TP_RST_N SD_LDO12 GPIO_23 UART1_TXD UART1_RXD UART1_CTS UART1_RTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 8 3 9 3 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 0 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 0 6 1 6 2 6 3 6 K L C _ D S D M C _ D S 1 1 O D L _ D S 0 A T A D _ D S 1 A T A D _ D S 2 A T A D _ D S POWER GND E T _ D C L T O O B _ B S U L C S _ C 2 I _ P T A D S _ C 2 I _ P T N _ T S R _ D C L 3 A T A D _ D S I 8 3 _ O P G T E D _ D S
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D N G M _ K L C _ I S D _ I P M I P _ K L C _ I S D _ I P M I M 0 E N A L _ I S D _ I P M I P 0 E N A L _ I S D _ I P M M 1 E N A L _ I S D _ I P M I I P 1 E N A L _ I S D _ I P M I M 2 E N A L _ I S D _ I P M P 2 E N A L _ I S D _ I P M I I M 3 E N A L _ I S D _ I P M I P 3 E N A L _ I S D _ I P M I D N G 4 6 5 6 6 6 7 6 8 6 9 6 0 7 1 7 2 7 3 7 P _ K L C _ 0 S C _ I P M I I M _ 0 N L _ 0 S C _ I P M I I P _ 0 N L _ 0 S C _ I P M I I M _ 1 N L _ 0 S C _ I P M I I D N G P _ 1 N L _ 0 S C _ I P M I I M _ K L C _ 1 S C _ I P M I I P _ K L C _ 1 S C _ I P M I I M _ 0 N L _ 1 S C _ I P M I I P _ 0 N L _ 1 S C _ I P M I I M _ K L C _ 0 S C _ I P M I I 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 ACCL_INT1_N/GPIO_96 ACCL_INT2_N/GPIO_65 MAG_INT_N/GPIO_36 ALSP_INT_N/GPIO_94 GPIO_98 GPIO_0 GPIO_110 GPIO_97 GPIO_68 GPIO_69 GPIO_89 GPIO_88 GPIO_92 GPIO_31 KEY_VOL_DOWN_N KEY_VOL_UP_N UART2_TXD UART2_RXD SENSOR_I2C_SDA SENSOR_I2C_SCL GPIO_32 GND GND ANT_MAIN GND GND CAM_I2C_SDA CAM_I2C_SCL CAM1_PWDN CAM1_RST_N CAM0_PWDN CAM0_RST_N GND ANT-BT GND CAM1_MCLK CAM0_MCLK RESERVED SDC2 USB Others UART USIM AUDIO GPIO Antenna TP LCM Camera 5 Smart Machine Smart Decision 1.4. Picture Figure 1: Top and Bottom view of SIM8905A 6 Smart Machine Smart Decision 1.5. Dimension Figure 2: Dimention 7 Smart Machine Smart Decision 2. Detail Block Diagram 720P LCD Primary Camera (8MP) Secondary Camera (5MP) USB HS (Support OTG) UIM Card1 UIM Card2 SD Card TP/Sensor/Cam/others Keypad Buttons VBUS_5V VBAT Vibrator ADC Headset Microphone Earpiece Speaker 4 Lanes DSI 2 Lanes CSI 1 Lanes CSI USB UIM1 UIM2 SDC2 I2C SPI UART * 2 Keypad Buttons GPIO AP Quad A7 w/ 512K L2 Camera ISP/VFE/Jpeg HW Display Processor Video Graphics Peripherals Modem Jolokia 4G/3G/2G MODEM Core MODEM/Voice Processor GNSS Baseband Linear Charger SPMI BUS MSM8909 RFFE WTR4905 RFFE Front End 3rd party PA+SW DIVERSITY SWITCH MODULE MAIN DRX MMMB Power Amplifier Modele WWAN RX I/Q GSM Phase WWAN TX I/Q RFFE GNSS I/Q BT/WIFI Baseband Note2 PDM BUS Codec Digital Memory Support EBI1 SDC1 eMMC flash +
LPDDR3 Output Power Management PM8909 CODEC 19.2M XO Figure 3: Block diagram of SIM8905A 3. Interface Application Power Supply The power supply pins of SIM8905A include VBAT_RF and VBAT_BB. VBAT_RF directly supplies the power to RF PA; VBAT_BB supplies the power to the baseband system. The power supply of SIM8905A ranges from 3.4V to 4.4V, and 3.9V is recommended. It must be able to provide sufficient current up to 3A for the high-power transmitting. If the DC input voltage is +5V and customers do not care about the power efficiency, a high-current low-dropout regulator is recommended. Figure 4 is the reference design. DC INPUT
+
C101 100uF C102 1uF 2 1 U101 MIC29302 Vout Vin On/Off FB D N G 3 PWR_CTRL 4 5
+ C103 330uF C104 100nF R103 470R R101 100K R102 47K VBAT Figure 4: LDO power supply reference circuit Note: To ensure a proper behavior of the regulator under light load, an extra minimum load (R103 in Figure 4) is required, because the current SIM8905A consumed is very small in sleep mode and power off mode. For more details about minimum load, please refer to specification of MIC29302. 8 Smart Machine Smart Decision To increase power efficiency, the switching mode DC-DC converter is preferable, especially when DC input voltage is quite high. The following figure is the reference design, and it is recommended to reserve a proper ferrite bead (FB101 in Figure 5) in series for EMI suppression. DC INPUT C101+ C102 100uF 1uF U101 1 LM2596-ADJ Vout Vin 5 PWR_CTRL DOn/Off N G 3 FB 2 4 D102 L101 100uH C103 330uF MBR360 FB101 VBAT
+
C104 100nF 270R@100MHz R101 2.2K R102 1K Figure 5: DC-DC power supply reference circuit For battery-powered application, the 3.7V lithium battery can be connected to SIM8905A VBAT pins directly, but other types of battery must be used carefully, since their maximum voltage may rise over the absolute maximum voltage of the module. When battery is used, the total impedance between battery and VBAT pins should be less than 150m. In any case mentioned above, at the VBAT input pins side, please take Figure 6 as a reference:
VBAT C103 33pF C101 100uF C105 220uF D101 5.1V 500mW VBAT_RF VBAT_BB GND Module Figure 6: VBAT input reference circuit Where C101 is a 100uF tantalum capacitor with low ESR; C105 is a 220uF tantalum capacitor with low ESR;
33pF and 10pF capacitors are used for eliminating the high frequency interference; 5.1V/500mW zener diode can protect the module against voltage surge. All of these components should be placed as close to VBAT pins as possible. Table 1: Recommended zener diode 1 2 3 Vendor On semi Prisemi Vishay Part number MMSZ5231BT1G PZ3D4V2H MMSZ4689-V Power(watts) 500mW 500mW 500mW Packages SOD123 SOD323 SOD123 9 Smart Machine Smart Decision 4 Crownpo CDZ55C5V1SM 500mW 0805 Power on/off Power on Users can power on SIM8905A by pulling down the PWRKEY pin for more than 2 second then release. This pin is already pulled up to 1.8V internally, so external pull up is not necessary. Reference circuits are shown as below:
PWRKEY 1K 4.7K 47K 1.8V R PMU Module Figure 7: Powered on/down module using transistor PWRKEY 1K 1.8V R PMU Module Figure 8: Powered on/down module using button The power on sequence is illustrated in Figure9 VBAT PWRKEY LDO5_1V8 LDO6_1V8 Others t>2s 175ms 250us 10 Software Controlled Smart Machine Smart Decision Figure9: Timing of power on module Power off Users can power off SIM8905A by pulling down the PWRKEY pin for more than 8 seconds. VRTC VRTC is the power supply for RTC circuit and charger output for coin cell or backup battery. If RTC support is needed when the battery is removed, a qualified coin cell or keep-alive capacitor is required on the VRTC pin. When VBAT is present and valid, coin cell charging is enabled through software control and powered from VBAT. Reference circuits are shown as below:
Keep-alive capacitor:
VRTC Module RTC Capacitor Non-rechargeable battery:
Figure 10: Keep-alive capacitor Rechargeable battery:
VRTC Module RTC Non-rechargeable battery Figure 11: Non-rechargeable battery VRTC Module RTC Rechargeable battery Figure 12: Rechargeable battery VRTC typical voltage is 3.0V, and the current consumption is about 5uA when VBAT is absence. For electrical characteristics, please refer to Table 23: VRTC characteristic. 11 Smart Machine Smart Decision Output Power Management Table 2: Output power management summary Pin Name Pin#
Specified range (V) Rated current (mA) Expected use LDO5_1V8 LDO6_1V8 SD_LDO11 SD_LDO12 USIM1_VDD USIM2_VDD LDO17_2V85 111 125 38 32 26 21 129 1.8 1.8 2.95 1.8/2.95 1.8/2.95 1.8/2.95 2.85 USB Interface 50 200 600 50 50 50 420 Force USB boot Display, camera, sensors SD/MMC card For SD signals pull-up USIM 1 USIM 2 Display, camera, sensors SIM8905A provides one High-speed USB 2.0 interface, used for software upgrading, debugging, charging, etc. USB_VBUS USB_DP USB_DM USB_ID GND Module 1uF
<1pF VBUS USB_DP USB_DM GND Connector Figure 13: USB reference circuit In addition, SIM8905A supports OTG function, but external 5V power supply is required. 12 Smart Machine Smart Decision External 5V USB_VBUS USB_DP USB_DM USB_ID GND Module VBUS USB_DP USB_DM USB_ID
<1pF GND Connector Figure14: USB_OTG reference circuit Linear Battery Charger SIM8905A module integrates a 1.44A linear battery charger for single-cell lithium-ion batteries. Charging Control Battery charging is controlled by a PMIC state-machine. The first step in the automated charging process determines if trickle charging is needed. Charging of a severely depleted battery must begin with trickle charging to limit the current, avoid pulling VDD down, and protect the battery from more charging current than it can handle. Once a minimum battery voltage is established using trickle charging, constant-current charging is enabled to charge the battery quickly this mode is sometimes called fast charging. Once the battery approaches its target voltage, the charge is completed using constant-voltage charging. VBAT VBAT-MAX 4.2V VWEAK VTRKL 3.2V 2.8V 450mA/1440mA IBAT IBAT-MAX ITRKL-B 450mA ITRKL-A 90mA TRKL-A TRKL-B CC CV Table 3: Linear battery charger performance specifications Figure15: Charging control diagram Time Parameter Comments Min Typ Max Units 13 Smart Machine Smart Decision Trickle-A Charging current Trickle-B Charging current Trickle-B threshold voltage range Programmable, 15.62 mV steps Weak battery threshold range Programmable, 18.75 mV steps Maximum battery voltage Programmable, 25 mV steps Fast charging current range Programmable, 90mA steps 81 405 2.5 3.0 4 90 90 450 2.796 3.206 4.2 99 495 2.984 3.581 4.775 1440 mA mA V V V mA ITRKL-A ITRKL-B VTRKL VWEAK VBAT_MAX IBAT_MAX VBAT_SNS VBAT_SNS is used for battery voltage sensing, the typical input range is 2.5V~4.5V. UART/SPI/I2C SIM8905A provides several sets of GPIOs which are available as BLSP (BAM-enabled low-speed peripheral) interfaces that can be configured to support various interface combinations, as shown in the following table. The operation voltage is 1.8V Table 4: UART/SPI/I2C functional assignments Pin Name Pin#
Expected or Default Function Alternative Function 1 Alternative Function 2 94 93 92 91 119 118 117 116 123 124 48 47 34 35 36 37 84 83 UART2_TXD UART2_RXD SENSOR_I2C_SDA SENSOR_I2C_SCL GPIO_8 GPIO_9 GPIO_10 GPIO_11 GPIO_16 GPIO_17 TP_I2C_SDA TP_I2C_SCL UART1_TXD UART1_RXD UART1_CTS UART1_RTS CAM_I2C_SDA CAM_I2C_SCL Note:
1. UART: can be used as a diagnostic port, up to 4 Mbps;
2. BLSP1_SPI_MOSI BLSP1_UART_TX BLSP1_SPI_MISO BLSP1_UART_RX BLSP1_I2C_SDA BLSP1_SPI_CS_N BLSP1_I2C_SCL BLSP1_SPI_CLK BLSP6_SPI_MOSI GPIO BLSP6_SPI_MISO GPIO BLSP6_SPI_CS_N GPIO BLSP6_SPI_CLK GPIO BLSP5_SPI_MOSI GPIO BLSP5_SPI_MISO GPIO BLSP5_I2C_SDA BLSP5_SPI_CS_N BLSP5_I2C_SCL BLSP5_SPI_CLK BLSP2_UART_TX BLSP2_SPI_MOSI BLSP2_UART_RX BLSP2_SPI_MISO BLSP2_UART_CTS BLSP2_SPI_CS_N BLSP2_UART_RTS BLSP2_SPI_CLK BLSP3_I2C_SDA BLSP3_I2C_SCL 14 BLSP1_UART_CTS BLSP1_UART_RTS BLSP6_I2C_SDA BLSP6_I2C_SCL BLSP2_I2C_SDA BLSP2_I2C_SCL I2C: supports master-only mode; up to 3.4 MHz, 2.2Kohm pull-up resistors are needed externally;
Smart Machine Smart Decision 3. SPI: supports master-only mode; up to 52 MHz. Secure Digital Interface SIM8905A provides one 4-bit secure digital interface, which supports the following standards:
SD Specifications Part 1 Physical Layer Specification Version 3.00 Part A2 SD Host Controller Standard Specification Version 3.00 Part E1 SDIO Specification Version 3.00 SD_LDO12 Module SD_DATA2 SD_DATA3 SD_CMD SD_LDO11 SD_CLK SD_DATA0 SD_DATA1 1uF M N M N M N M N M N 33R is required for high-speed operation;
placed close to the module 33R LDO5_1V8 1M SD_DET TVS C<15pF 1uF 33pF Placed close to SD card Figure17: SD card reference circuit Display Interface NMNot Mounting Reserved SD Card 1 DAT2 2 DAT3 3 CMD 4 VDD 5 CLK 6 VSS 7 DAT0 8 DAT1 11 GND 12 GND 13 GND 14 GND 9 DET_SW 10 COMMON SIM8905A provides a 4-lane MIPI_DSI, with 1.5 Gbps per lane high-speed mode bandwidth, to support 720p HD display. PWM is used as PWM control for external WLED driver. Table 5: Display interface pin definitions Pin Name PWM LCD_RST_N LCD_TE MIPI_DSI_CLK_M MIPI_DSI_CLK_P MIPI_DSI_LANE0M MIPI_DSI_LANE0P MIPI_DSI_LANE1M MIPI_DSI_LANE1P Type Description PWM control for external WLED driver LCD reset LCD tear effect MIPI display serial interface O O I O O O O O O Pin#
29 49 50 52 53 54 55 56 57 15 Smart Machine Smart Decision MIPI_DSI_LANE2M MIPI_DSI_LANE2P MIPI_DSI_LANE3M MIPI_DSI_LANE3P 58 59 60 61 O O O O If only 2-lane MIPI_DSI is needed, just leave LANE2 and LANE3 floating. Module VBAT WLED driver LED+
LED-
PWM 1M 1uF 1uF LDO17_2V85 LDO6_1V8 LCD_RST_N LCD_TE MIPI_DSI_LANE1_M MIPI_DSI_LANE1_P MIPI_DSI_CLK_M MIPI_DSI_CLK_P MIPI_DSI_LANE0_M MIPI_DSI_LANE0_P LCM 1 GND 2 LED+
3 LED+
4 LED-
5 LED-
6 LCD_ID 7 VCC(2.8V) 8 GND 9 GND 10 VCC_IO 11 RESET 12 TE 13 NC 14 NC 15 GND 16 DSI_D1-
17 DSI_D1+
18 GND 19 DSI_CLK-
20 DSI_CLK+
21 GND 22 DSI_D0-
23 DSI_D0+
24 GND 25 GND Figure 18: Display reference circuit Touch Screen Interface Table 6: Touch screen interface pin definitions Pin Name TP_I2C_SDA TP_I2C_SCL TP_INT_N TP_RST_N Pin#
48 47 30 31 Type I/O O I O Description Touch screen I2C data Touch screen I2C clock Touch screen interrupt Touch screen reset Note:
1. TP_I2C: supports master-only mode; 2.2Kohm pull-up resistors are needed externally;
16 Smart Machine Smart Decision Camera Interface SIM8905A supports two cameras: 2-lane MIPI_CSI primary camera up to 8MP resolution and 1-lane MIPI_CSI secondary camera up to 5MP resolution. Table 7: Camera interface pin definitions Pin Name MIPI_CSI0_CLK_M MIPI_CSI0_CLK_P MIPI_CSI0_LN0_M MIPI_CSI0_LN0_P MIPI_CSI0_LN1_M MIPI_CSI0_LN1_P MIPI_CSI1_CLK_M MIPI_CSI1_CLK_P MIPI_CSI1_LN0_M MIPI_CSI1_LN0_P CAM0_MCLK CAM1_MCLK CAM0_RST_N CAM0_PWDN CAM1_RST_N CAM1_PWDN CAM_I2C_SCL CAM_I2C_SDA Pin#
63 64 65 66 67 68 70 71 72 73 74 75 79 80 81 82 83 84 Type Description I I I I I I I I I I O O O O O O O Primary camera serial interface Secondary camera serial interface Primary Camera master clock Secondary Camera master clock Primary Camera reset Primary Camera power down Secondary Camera reset Secondary Camera power down Camera I2C clock I/O Camera I2C data 17 Smart Machine Smart Decision Module LDO17_2V85 LDO6_1V8 MIPI_CSI0_CLK_P MIPI_CSI0_CLK_M MIPI_CSI0_LN0_P MIPI_CSI0_LN0_M MIPI_CSI0_LN1_P MIPI_CSI0_LN1_M CAM0_MCLK CAM0_RST_N CAM0_PWDN CAM_I2C_SCL CAM_I2C_SDA 2.2uF 2.2uF 100nF 100nF 2.2K 2.2K Figure 19: Primary camera reference circuit Primary Camera AGND VCM AVDD DVDD VDD_IO GND MCP MCN GND MDP0 MDN0 GND MDP1 MDN1 GND MCLK RESET PWDN SCL SDA Audio SIM8905A provides two microphone inputs and three outputs including earpiece, stereo headphones, and mono class-D speaker driver. Table 8: Audio interface pin definitions Pin Name Pin#
Type Description EAR_P EAR_M HPH_R HPH_GND HPH_L HS_DET GND_MIC MIC2P MIC1P SPK_M SPK_P MIC_BIAS1 MIC_BIAS2 8 9 136 137 138 139 5 6 4 11 10 194 210 O O O I O I P I I O O O O Earpiece output, positive Earpiece output, negative Headphone output, right channel Headphone ground reference Headphone output, left channel Headset detection Microphone input 2 ground reference Microphone input 2, positive Microphone input 1, positive Speaker driver output, negative Speaker driver output, positive Microphone bias 1 Microphone bias 2 18 Smart Machine Smart Decision Microphone Close to microphone 10pF route as differential pair
& shielded by GND 10pF ESD 33pF 33pF 10pF 33pF ESD MIC1P GND_MIC Module Electret Microphone Figure 20: Microphone reference circuit Internal MIC_BIAS pull-up is used to reduce BOM cost and PCB routing. Note:
1. 2. Single-ended capless input is the only supported configuration, but differential routing is recommended. f = 1.02 kHz; single-ended input; 200 Hz to 20 kHz bandwidth; capless Table 9: Analog microphone input performance Parameter Test conditions Microphone amplifier gain = 0 dB (minimum gain) Input referred noise Single-ended, A-weighted, capless Single-ended, A-weighted, capless Signal-to-noise ratio THD+N ratio Analog input = -1 dBV Microphone amplifier gain = 6 dB Input referred noise Single-ended, A-weighted, capless Single-ended, A-weighted, capless f = 1.02 kHz; single-ended input;
200 Hz to 20 kHz bandwidth; capless Signal-to-noise ratio THD+N ratio Analog input = -1 dBV Microphone amplifier gain = 24 dB (maximum gain) Input referred noise Single-ended, A-weighted, capless Single-ended, A-weighted, capless f = 1.02 kHz; single-ended input;
200 Hz to 20 kHz bandwidth; capless Signal-to-noise ratio THD+N ratio Analog input = -1 dBV General requirements 19 Min
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92.0
-
-
91.0
-
-
84.2
-
Typ Max Units 19.3 94.0
-86.0 25.1 Vrms
-
-70.0 dB dB 5.9 92.5
-85.0 7.1
-
-70 Vrms dB dB 3.4 85.4
-82.4 4.2
-
-76.0 Vrms dB dB Smart Machine Smart Decision Full-scale input voltage Single-ended 1 kHz input. Input signal level required to get 0 dBFS digital output Capless input Input impedance Capless input Input disabled Input capacitance Headset
-0.5 1.0 3.0
-
0
-
-
-
0.5 dBV
-
-
15 M M pF Stereo class-AB headphone supports 16 , 32 , and up to 50 K loads. Its typical output power at 1.02 KHz and THD + N 1% is:
21.5 mW with 16 loads, 0 dBFS and -4.5 dB gain 30.8 mW with 32 loads, 0 dBFS and 0 dB gain A 100K pull-down resistor is integrated at HPH_L pin, which could be used for mechanical insertion or removal detection through HS_DET pin. Figure 22 shows the reference circuit for normally-closed (NC) type headset jack. 0R 0R HS_DET HPH_R HPH_L MIC2P GND_MIC HPH_GND Close to headset jack 1000 OHM@100MHZ 1000 OHM@100MHZ 1000 OHM@100MHZ 1000 OHM@100MHZ 1000 OHM@100MHZ 1000 OHM@100MHZ Module 33pF 33pF 33pF 100K TVS Figure 21: Headset reference circuit Note:
1. SIM8905A also supports NO/NC type headset jack with detect pin on HPH_L or GND. 2. HPH has a negative swing and requires a bi-directional TVS diode. Table 10: Headphone output performance specifications Headset Jack Parameter Output power Full-scale output Voltage Output load Test conditions 16 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 32 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 16 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 32 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V Min 15.6 27.0 0.50 0.96 13.0 20 Typ Max Units mW 21.5 25.5 32.0 30.8 mW 0.59 0.64 Vrms 0.99 1.00 Vrms 16/32
-
Smart Machine Smart Decision Disabled output impedance Measured externally, with amplifier disabled 1.0
-
-
M Note: The VDD_CP is internal Voltage of module. Earpiece Class AB earpiece driver supports 10.67 , 16 , 32 , and up to 50 K loads. Its typical output power at 1.02 KHz, 6 dB gain, and THD + N 1% is:
119 mW with 32 loads 243 mW with 16 loads 320 mW with 10.67 loads 10pF 10pF 10pF EAR_P EAR_M Module 33pF 33pF 33pF Close to earpiece 10pF 10pF 10pF ESD 33pF 33pF 33pF ESD Route as differential pair
& shielded by GND Figure 22: Earpiece reference circuit Table 11: Earpiece output performance specifications Test conditions 32 load f = 1.02 kHz, 6 dB gain THD+N < 1%
16 load f = 1.02 kHz, 6 dB gain THD+N < 1%
6 dB gain mode f = 1.02 kHz 1.5 dB gain mode f = 1.02 kHz Measured externally, amplifier disabled Min 120.0 235.0 1.8 1.0 10.7 1.0 Parameter Output power Full-scale output Voltage Output load Disabled output impedance Speaker Typ Max Units mW 124.5 243.0 mW Vrms 2.0 1.2 Vrms 32
-
-
-
2.1 1.3
-
-
M Class-D mono differential loud speaker driver supports 4 and 8 loads. The driver is powered from VBAT, and does not support external 5 V Boost Option. Its typical output power at 1.02 KHz, 12 dB gain, and THD + N 1% is:
950 mW with 8 loads, VDD_SPKR=VBAT= 4.2 V 692 mW with 8 loads, VDD_SPKR=VBAT= 3.6 V 1063 mW with 4 loads, VDD_SPKR=VBAT= 3.6 V 21 Smart Machine Smart Decision Close to speaker 10pF 33pF 10pF 33pF ESD SPK1P SPK1N Module 10pF 10pF 33pF 33pF 10pF 10pF 33pF 33pF ESD Route as differential pair
& shielded by GND Figure 23: Speaker reference circuit Table 12: speaker driver output performance specifications Parameter Output power (Pout)
(f = 1 kHz, gain = 12 dB, THD+N 1%) THD+N
(1 kHz) Efficiency Vdd = 3.7 V output impedance Shutdown Turn on time Test conditions 15 H + 8 + 15 H, Vdd = 3.6 V 15 H + 4 + 15 H, Vdd = 3.6 V 15 H + 8 + 15 H, Vdd = 3.8 V 15 H + 8 + 15 H, Vdd = 4.2 V 1 W Pout, VDD_SPKR = 4.2 V 800 mW Pout, VDD_SPKR = 4.2 V 600 mW Pout, VDD_SPKR = 3.8 V 500 mW Pout, VDD_SPKR = 3.6 V 500 mW Pout, 15 H + 8 + 15 H 1 W Pout, 15 H + 4 + 15 H Disabled current Microphone bias Min 584 862 662 819
-
-
-
-
82.0 73.0 25
-
-
Typ 631 953 710 879
-85.0
-75.0
-75.0
-76.0 84.0 78.0
-
0.1 0.2 Max
-
-
-
-
-75.0
-45.0
-70.0
-71.0
-
-
-
1.0 10.0 Units mW mW mW mW dB dB dB dB
%
%
k A ms SIM8905A provides two microphone bias outputs: MIC_BIAS1and MIC_BIAS2. The microphone bias cannot be used for ECM-type microphone. MIC_BIAS1and MIC_BIAS2 could be used for External MEMS microphone as power supply. The microphone bias output performance specifications are shown in the following table:
Table 13: Microphone bias output performance specifications Parameter Test conditions 22 Min Typ Max Units Smart Machine Smart Decision No load No load 2 microphone loads of 1.0 to 1.5 mA each On resistance Sink current 0.1 F bypass at 20 Hz at 200 Hz to 1 kHz at 5 kHz at 10 kHz at 20 kHz External bypass mode1 1.60
-3.00 2.0
-
2.0 0.0 80 80 80 80 75 0.1
-
0.00 3.0
-
-
2.0
-
-
-
-
-
0.1 2.85 3.00
-
20
-
4.0
-
-
-
-
-
0.5 V
%
mA mA Vrms dB dB dB dB dB F Output voltage Output voltage error Output current Output switch to ground Output noise PSRR- Power supply rejection ratio Output capacitor value 2 USIM Interface SIM8905A supports dual cards dual standby, and card presence detection. Note: The standard software provided by SIMCom only supports single USIM1 card configuration. Table 14: USIM interface pin definitions Pin Name USIM2_DET USIM2_RST USIM2_CLK USIM2_DAT USIM2_VDD USIM1_DET USIM1_RST USIM1_CLK USIM1_DAT USIM1_VDD Pin#
17 18 19 20 21 22 23 24 25 26 Type I O O I/O P I O O I/O P Description USIM2 presence detection USIM2 reset USIM2 clock USIM2 data LDO 15 output for USIM2, 1.8V/2.95V USIM1 presence detection USIM1 reset USIM1 clock USIM1 data LDO 14 output for USIM1, 1.8V/2.95V 23 Smart Machine Smart Decision 100K Module LDO5_1V8 USIM_VDD USIM_RST SUIM_CLK USIM_DET USIM_DAT USIM Card VCC RST CLK DET GND VPP I/O COM 22R 22R 22R 220nF 22pF TVS C<30pF Figure 1: USIM card reference circuit USIM_DAT has been pulled up with a 10kohm resistor to USIM_VDD in module. A 220nF shut capacitor on USIM_VDD is used to reduce interference. Note:
ADC SIM8905A provides one 16bits ADC. Its performance parameters are shown as the following table. Table 15: ADC performance parameters Parameter Input voltage range Comments Programmable Resolution Analog input bandwidth Sample rate INL DNL Offset error Gain error XO/8 15-bit output 15-bit output Relative to full-scale Relative to full-scale Vibrator Min 0.1 0.3
-
-
-
-
-
-
-
Typ
-
-
16 100 2.4
-
-
-
-
Max 1.7 4.5
-
-
-
8 4 1 1 Unit V bits kHz MHz LSB LSB
%
%
SIM8905A supports silent incoming-call alarms with its vibration motor driver. The vibration driver is a programmable voltage output that is referenced to VBAT; when off, its output voltage is VBAT. The motor is connected between VBAT and the VIB_DRV_N pin. The programmable motor voltage ranges from 1.2 to 3.1 V in 100 mV steps. 24 Smart Machine Smart Decision VBAT Module 1uF VIB_DRV 0R Vibrator Figure 25: Vibrator reference circuit Antenna Interface SIM8905A provides two antenna interfaces including MAIN antenna and DRX antenna. To ensure good RF performance, users should meet the following requirements:
Keep the RF traces at 50. Maintain a complete and continuous reference ground plane from antenna pin to the RF connector. The RF traces should be away from any other noisy traces. Keep the RF traces as short as possible. MAIN Antenna reference circuit The recommended circuit is shown as below:
RF connector
(optional) GND ANT_MAIN GND 86 87 88 Module MAIN ANT Matching circuit R1 C1 C2 Figure 26: MAIN antenna recommended circuit R1, C1 and C2 are antenna matching components in Figure 27, the value of these components are determined according to the antenna tuning results. By default, R1 is 0, C1 and C2 are reserved. The RF connector in Figure 27 is used to ensure the accuracy and convenience of the conduction testing, so SIMCOM suggest keeping it. If considering Low-Cost BOM, user can cancel the connector. 25 Smart Machine Smart Decision DRX Antenna reference circuit The recommended circuit is shown as below:
RF connector
(optional) Diversity ANT Matching circuit R1 C1 C2 GND ANT_DRX GND 130 131 132 Module Figure 27: DRX antenna recommended circuit R1, C1 and C2 are antenna matching components in Figure 28, the value of these components are determined according to the antenna tuning results. By default, R1 is 0, C1 and C2 are reserved. The RF connector in Figure 28 is used to ensure the accuracy and convenience of the conduction testing, so SIMCOM suggest keeping it. If considering Low-Cost BOM, user can cancel the connector. 26 Smart Machine Smart Decision PCB Layout This section provides PCB layout guidelines for SIM8905A users to ensure their production against lots of issues, and achieve the optimum performance. Stack-up Options At least, 4-layer through-hole PCB should be chosen for good impedance control and signal shielding. General Placement Guidelines Locate SIM8905A module in the center of PCB, rather than in the corner. Digital devices and traces should not be placed near sensitive signals like RF and clock. Keep SPKR and MIC away from sensitive RF lines. PCB Layout Guideline Details RF Trace RF connector should be placed close to the modules antenna pin. Antenna matching circuit should be placed close to the antenna. Keep the RF traces at 50. Maintain a complete and continuous reference ground plane from antenna pin to the RF connector. The RF traces should be far away from any other noisy traces. Keep the RF traces as short as possible. If using a coaxial RF cable to connect the antenna, please avoid spanning on USIM cards, power circuits and high-speed digital circuits to minimize the impact of each other. Power/GND Both VBAT and return path should be as short and wide as possible to minimize the IR drop The VBAT current should go through Zener diode, capacitors, then VBAT pins Must have a solid ground plane throughout the board as the primary reference plane for most signals USIM Card Ensure USIM card holder is far way from antenna or RF signal 27 Smart Machine Smart Decision ESD component and bypass caps should be placed closed to USIM Card USIM card signals should be far away from other high-speed signal MIPI_DSI/CSI Intra-pair length matching < 5 ps (0.67 mm) Inter-pair length matching < 10 ps (1.3 mm) Protect MIPI_DSI/CSI signals from noisy signals (clocks, SMPS, etc.) Differential pairs, 100 nominal, 10%
Total routing length < 305 mm Lane-to-lane trace spacing = 3x line width Spacing to all other signals = 4x line width Maintain a solid ground reference for clocks to provide a low-impedance path for return currents Each trace needs to be next to a ground plane Minimize the number of via on the trace Refer to the following table for the length of MIPI traces inside the module. Table 16: Length of MIPI traces inside the module Pin#
52 53 54 55 56 57 58 59 60 61 63 64 65 66 67 68 70 71 72 73 USB MIPI_DSI_CLK_M MIPI_DSI_CLK_P MIPI_DSI_LANE0M MIPI_DSI_LANE0P MIPI_DSI_LANE1M MIPI_DSI_LANE1P MIPI_DSI_LANE2M MIPI_DSI_LANE2P MIPI_DSI_LANE3M MIPI_DSI_LANE3P MIPI_CSI0_CLK_M MIPI_CSI0_CLK_P MIPI_CSI0_LN0_M MIPI_CSI0_LN0_P MIPI_CSI0_LN1_M MIPI_CSI0_LN1_P MIPI_CSI1_CLK_M MIPI_CSI1_CLK_P MIPI_CSI1_LN0_M MIPI_CSI1_LN0_P Net Name Length(mm) 8.08 9.03 9.04 8.73 9.29 9.10 8.69 8.95 9.10 9.85 14.04 13.79 13.27 13.23 13.96 14.49 17.21 17.69 16.34 17.25 90 differential, 10% trace impedance Differential data pair matching < 6.6 mm (50 ps) 28 Smart Machine Smart Decision External components should be located near the USB connector. Should be routed away from sensitive circuits and signals. If there are test points, place them on the trace to keep branches as short as possible If USB connector is used as the charger input, USB_VBUS node must be routed to the module using extremely wide traces or sub planes. Refer to the following table for the length of USB traces inside the module. Table 17: Length of USB traces inside the module Net Name Length(mm) 30.58 30.22 Pin#
13 14 USB_DM USB_DP SDC Signal Protect other sensitive signals/circuits from SDC corruption. Protect SDC signals from noisy signals (clocks, SMPS, etc.). Up to 200 MHz clock rate 50 nominal, 10% trace impedance CLK to DATA/CMD length matching < 1 mm 3035 termination resistor on clock lines near the module Total routing length < 50 mm recommended Spacing to all other signals = 2x line width Bus capacitance < 15 pF Refer to the following table for the length of SD traces inside the module. Table 18: Length of SD traces inside the module Net Name Length(mm) 14.24 15.19 14.87 13.63 12.90 13.05 SD_CLK SD_CMD SD_DATA0 SD_DATA1 SD_DATA2 SD_DATA3 Pin#
39 40 41 42 43 44 Audio Analog input 4 to 5 mil trace widths; 4 to 5 mil spacing between traces Differential route for MIC1P with GND_MIC and MIC2P with GND_MIC;
29 Isolate from noise sources, such as antenna, RF signals, SMPS, clocks, and other digital signals with fast Smart Machine Smart Decision transients Analog output Coplanar ground fill on both sides (of traces or pair as appropriate); in between ground planes grounds above and below Isolate from noise sources such as antenna, RF signals, SMPS, clocks, and other digital signals with fast transients. EAR output signal route as differential pair with 10 mil trace widths. SPK output signals route as differential pair with 20 mil trace widths with 8 load and 25 mil trace widths with 4 load HPH output signals not a differential pair; 10 mil trace widths for HPH_L and HPH_R; 15 mil trace widths for HPH_GND Connect HPH_GND to the ground pin of the jack connector and route HPH_GND in between HPH_L and HPH_R for best crosstalk minimization 30 SIM8905E Document Electrical and Reliability Absolute Maximum Ratings Absolute maximum ratings reflect the stress levels that, if exceeded, may cause permanent damage to the device. Functionality and reliability are only guaranteed within the operating conditions. Table 19: Absolute maximum ratings Parameter VBAT VBUS VRTC Temperature Range Table 20: Temperature range Parameter Operating temperature Storage temperature Operating Voltage Table 21: Operating voltage Parameter VBAT VBUS VRTC Min
-0.3
-0.3
-
Max 5 7 3.5 Max
+75
+90 Max 4.4 5.5 3.25 Min
-25
-40 Min 3.4 4.35 2.0 Typ Typ 3.9 5 3.0
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Unit V V V Unit Unit V V V Smart Machine Smart Decision Digital-logic Characteristics Table 22: 1.8 V digital I/O characteristics Parameter VIH VIL VOH VOL Description High-level input voltage Low-level input voltage High-level output voltage Low-level output voltage Min 1.17
-
1.35
-
Typ
-
-
-
-
Unit Max
-
0.63
-
0.45 V V V V Table 23: USIM interface characteristics (USIM_VDD=1.8V/2.95V) Parameter Description VIH High-level input voltage Min 0.7* USIM_VDD VIL VOH VOL Low-level input voltage
-0.3 High-level output voltage 0.8*USIM_VDD Low-level output voltage 0 Table 24: SD interface characteristics (SD_LDO11 =1.8V) Parameter Description VIH High-level input voltage VIL VOH VOL Low-level input voltage High-level output voltage Low-level output voltage Min 1.27
-0.3 1.4 0 Table 25: SD interface characteristics (SD_LDO11 =2.95V) Parameter Description VIH High-level input voltage Min 0.625* SD_LDO11 Low-level input voltage
-0.3 High-level output voltage 0.75* SD_LDO11 Low-level output voltage 0 VIL VOH VOL Typ
-
-
-
-
Typ
-
-
-
-
Typ
-
-
-
-
Max Unit USIM_VDD+0.3 0.2* USIM_VDD USIM_VDD 0.4 Max 2 0.58
-
0.45 V V V V Unit V V V V Max Unit SD_LDO11+0.3 0.25* SD_LDO11 SD_LDO11 V V V 0.125* SD_LDO11 V
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Smart Machine Smart Decision PWRKEY Characteristics Table 26: PWRKEY characteristics Parameters VIH VIL Description High-level input voltage Low-level input voltage VRTC Characteristics Table 27: VRTC characteristic Parameter VRTC-IN IRTC-IN VRTC-OUT IRTC-OUT Description VRTC input voltage VRTC current consumption VRTC output voltage VRTC output current Min 1.4
-
Min 2.0
-
2.5
-
Typ
-
-
Typ 3.0 5 3.1 Max
-
0.6 Unit V V Max 3.25 10 3.2 2 Unit V uA V mA Current Consumption (VBAT=3.9V) Table 28: Current consumption Parameter Leakage current Standby current Peak current Conditions Min Off mode Flight mode GSM:
BS-PA-MFRMS=9 BS-PA-MFRMS=5 BS-PA-MFRMS=2 WCDMA, DRX=8 LTE-FDD, standby 1.28s LTE-TDD, standby 1.28s Typ 20 1.22 1.65 1.85 3.00 2.48 2.11 2.56 Max 3.0 Unit uA mA mA mA mA mA mA mA A Electro-Static Discharge Electrostatic discharge (ESD) occurs naturally in laboratory and factory environments. An established
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Smart Machine Smart Decision high-voltage potential is always at risk of discharging to a lower potential. If this discharge path is through a semiconductor device, it may result in destructive damage. SIM8905A must be handled according to the ESD Association standard: ANSI/ESD S20.20-1999, Protection of Electrical and Electronic Parts, Assemblies, and Equipment. Table 29: ESD performance parametersTemperature: 25, Humidity: 45%
Pin VBAT GND Antenna PWRKEY Contact discharge 5KV 5KV 5KV 4KV Air discharge 10 KV 12KV 10KV 6KV Physical channel TX: 18600-19199 RX: 600-1199 TX: 19950-20399 RX: 1950-2399 TX: 20400-20649 RX: 2400-2649 TX: 23010-23179 RX: 5010-5179 Module Operating Frequencies Table 30: Module operating frequencies Frequency Receive Transmit 1930-1990 MHz 1850-1910 MHz 2110-2155 MHz 1710-1755 MHz 869-894 MHz 729-746MHz 824-849MHz 699-716MHz LTE B2 LTE B4 LTE B5 LTE B12 Module Output power Table 31: Conducted transmission power Frequency LTE-FDD B2 LTE-FDD B4 LTE-FDD B5 LTE-FDD B12 Power 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB Min.
<-40dBm
<-40dBm
<-40dBm
<-40dBm
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Smart Machine Smart Decision Module Receiving Sensitivity Table 32: Reference sensitivity QPSk PREFSENS (LTE) E-UTRA Band number 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz 2 4 5 12
-102.7
-104.7
-103.2
-101.7
-99.7
-101.7
-100.2
-98.7
-98
-100
-98
-97
-95
-97
-95
-94
-93.2
-95.2
-92
-94 Duplex mode FDD FDD FDD FDD
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Smart Machine Smart Decision Contact us:
Shanghai SIMCom Wireless Solutions Co.,Ltd. Address: Building B, SIM Technology Building, No. 633, Jinzhong Road, Shanghai, P. R. China 200335 Tel: + 86 21 3157 5100 Fax: +86 21 3157 5200 URL: http://simcomm2m.com/
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