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 19
LDO_1V8
LDO_USIM
PMU
26M
DCXO
ANT_MAIN
VBAT_BB
SPI GPIOsI2SI2C
NAND
FLASH
HB
PWRKEY
RESET
3G/LTE
RF PA
GSM
GPRS
EDGE PA
+SWITCH
TX SAW
TX SAW
Duplexer
Duplexer
Duplexer
Duplexer
Duplexer
Duplexer
Duplexer
LNA
MB
LB
2G_HB
2G_LB
B28
B5
B3
B1
B8
B28
B7
B38/40/41
B40
B38/41
B7
B28
B8
B1
B3
B5
B28
RFFE
RFFE
RF
SWITCH
RX SAW
RX SAW
RX SAW
RX SAW
RX SAW
RX SAW
RX SAW
RX SAW
B40
CPU
B38/ 41 Or B7
B1
B20
B28
B3
B8
B5
B7
WLAN
SDIO
MIC
SD
UART
USIM
USB
RMII
RMII_LDO
PCI E
EAR
VBAT_RF
ANT_DRX
VAON
MIC_BIAS
TX SAW
B34/39
RX SAW
B34/39
SP2T
SWITCH
RX SAW
RX SAW
B34/39
GPS SAW LNA
ANT_GPS
LDO _1V8
LDO _2V8
TCXO32K
UA RT2
ADC*2
Figure 3 L508LA Functional Block Diagram
2.2.1 Introduction to baseband function
L508 baseband mainly includes the following signal groups: USB Interface, USIM interface, I2C
interface, SDIO interface, RMII interface, PCIe interface, UART interface, ADC interface, multiple
programmable general input and output, PCM digital audio interface, module boot, module control
signal, power and ground.
2.2.2 Introduction to radio frequency function