Installation Instructions
Table Of Contents
- Contents
- List of Table
- List of Figures
- 1 About this document
- 2 Product Overview
- 3 Mechanical Dimensions
- 4 Interface description
- 4.1 Pin Definition
- 4.2 Operating conditions
- 4.3 Digital logic characteristics
- 4.4 Power interface
- 4.5 USIM card interface
- 4.6 PCM interface
- 4.7 USB2.0 interface
- 4.8 UART interface
- 4.9 SPI interface
- 4.10 I2C interface
- 4.11 Network light
- 4.12 System Status Indication
- 4.13 Flight Mode
- 4.14 Forced USB download interface
- 4.15 SD card interface
- 4.16 SDIO_WIFI/EMMC interface
- 4.17 PCIe interface
- 4.18 RMII/RGMII interface
- 4.19 AUDIO interface
- 4.20 ADC
- 4.21 GPIOs
- 4.22 Power on/off and reset interface
- 4.23 Antenna interface
- 5 Product characteristics
- 6 Design Guideline
- 7 Storage, Production and Package
- 8 Safety Information
- 空白页面
- 空白页面
L508 Hardware Design
Copyright© Shanghai Mobiletek Communication Ltd 28
24 MMC_DATA2 B 1.8V/3V Secure digital controller 1 data bit 2
25 MMC_DATA3 B 1.8V/3V Secure digital controller 1 data bit 3
26 MMC_CLK DO 1.8V/3V Secure digital controller 1 clock
27 MICN AI Microphone negative input
28 GPIO_21 B_PU 1.8V Configurable I/O
29 MICP AI Microphone1 positive input
30 WLAN_PDN
B_PU
1.8V
Configurable I/O
DO WLAN chip enable
DI RGMII Receive Data 2
31 RECN AO Receiver negative output
32 RECP AO Receiver positive output
33 RESERVED -- Reserved for other purposes, Keep it open
34 VDD1V8 PO LDO output, default voltage is 1.8V
35 32K_OUT DO 1.8V 32K clock output
36 RESERVED -- Reserved for other purposes, Keep it open
37 GND -- -- Ground
38 VBAT_BB PI Module baseband main power
39 VBAT_BB PI Module baseband main power
40 GND -- -- Ground
41 GND -- -- Ground
42 WLAN_DCDC_EN
B_PD
1.8V
Configurable I/O
DO WLAN external power enable
43 GND -- -- Ground
44 SD_LDO PO 3.0V
LDO output for SD card power, default v
oltage is
3.0V
45# GPIO_20 B_PD 1.8V Configurable I/O, can't pull it up when you boot on