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
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4 Interface description
4.1 Pin Definition
4.1.1 Pin I/O parameter definition
The I/O parameter definition for this product is shown in Table 8.
Table 8 I/O parameter definitions
Pin attribute symbol Description
PI Power input
PO Power output
AI Analog input
AO Analog output
B Digital Signal input/output
DI Digital input
DO Digital signal output
USIM_VDD SIM card power
RMII_LDO RMII interface power
B_PD Digital bidirectional. Default level pull down during system initialization
B_PU Digital bidirectional. Default level pull up during system initialization
GND Ground
4.1.2 Pin Layout
All functions of L508 are completed by 135-PIN, please refer to the PIN definition below. The
sequence definition of the interface pins of this product is shown in the following figure: