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 34
124 PCIE_TXP AIO 0.9V Differential transmit data signal positive
125 PCIE_TXN AIO 0.9V Differential transmit data signal negative
126 PCIE_RXP AIO 0.9V Differential receive data signal positive
127 PCIE_RXN AIO 0.9V Differential receive data signal negative
128 PCIE_REFCLK_P AIO 0.9V
Reference clock signal
positive
129 PCIE_REFCLK_N AIO 0.9V
Reference clock signal
negative
130 AP_UART_RXD B_PU 1.8V
Software LOG output
131 AP_UART_TXD B_PU 1.8V
132 RESERVED -- -- Reserved for other purposes, Keep it open
133 RESERVED -- -- Reserved for other purposes, Keep it open
134 RESERVED PO Reserved for other purposes, Keep it open
135 VAON PO VRTC power, can be used for GPS backup power
Note: 1, 45PIN, GPIO_20 cannot be pulled up when boot on, which will make the SD card unusable
；
2, 46PIN, 47PIN are ADC channel. L508E/L508TLC, Voltage detection range:0-1.3V;
L508LA/L508C, Voltage detection range:0-1.8V. L508LA/L508C Accuracy is affected by temperature,
can be used when the requirements are not high;
3, 79PIN, L508E no GNSS function, 79PIN can be open processing, 79PIN is GNSS antenna in
L508LA/L508C/L508TLC;
4, 114PIN, 115PIN, UART2 signal is used in GNSS function, UART2 can not used when
L508LA/L508C/L508TLC has GNSS function;
4.2 Operating conditions