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 54
Table 24 NETLIGHT status
Net Status Module working status
Always on Searching Network/Call Connect
200ms ON, 200ms OFF Data Transmit
800ms ON, 800ms OFF Registered network
OFF Power off / Sleep
R10
R11
4.7K
4.7K
4.7K
4.7K
NETLIGHT
2K
LED
VBAT
Figure 27 NETLIGHT reference circuit
4.12 System Status Indication
STATUS Pin is the status indicator PIN, when the STATUS is high, that the system boot is normal,
when the STATUS is low, that the system abnormal or the system has been shut down.
Table 25 STATUS
Pin No. Pin Name I / O type Functional description
49 STATUS DO System Status Display