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 40
ETA6003
IN
EN
USB_DET
STAT
ISET1
ISET1
NTC
GND
SW1
SW2
SYS1
SYS2
BATT1
BATT2
BATTERY
GND
NTC
VBAT
VBAT_BB
1uH
22uF
GPIO_20
VBAT_RF
33K
GPIO_05
VDD1V8
33K
ADC1
ADC2
MODULE
680K
220K
0.1uF
10uF
EXTON1N
USB_VBUS
510Ω
1K
USB_VBUS
Figure 11 Charging reference circuit
4.5 USIM card interface
4.5.1 Pin Description
The L508 module baseband processor integrates an ISO 7816-2 Compliant Sim card interface that
supports and automatically detects 3.0 V and 1.8 V SIM cards, and the USIM card interface signal is
shown as shown below.
Table 16 SIM Card interface definition
Pin No. Pin Name Functional description Further description
20 USIM_VDD
LDO output for SIM card
power
USIM card power supply, output by the
module, support 1.8v/3v dual voltage range.
17 USIM_DATA SIM data line
USIM card DATA signal, two-
way signal,
supports 1.8V/3V dual voltage range.