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 64
The receiving and sending of data signals of RMII/RGMII requires a single-ended impedance of 50
ohm, and the equal length should be controlled within 3mm. Isolation measures should be taken.
Table 33 RMII routing length inside the module
The length of routes outside the module should be considered the length of routes in the module. and
the total length of routes should be equal.
Pin No. Pin Name Length (mm)
L508E
101 RMII_RXD0 11.43
102 RMII_RXD1 17.82
30 WLAN_PDN（RGMII_RXD2） 33.57
84 GPIO_05（RGMII_RXD3） 24.92
103 RMII_CLK 13.17
100 RMII_RX_CTRL 12.48
104 RMII_TXD0 13.39
105 RMII_TXD1 14.85
49 STATUS（RGMII_TXD2） 43.16
51 NETLIGHT（RGMII_TXD3） 39.76
50 WAKEUP_IN（RGMII_TXCLK） 42.68
106 RMII_TX_CTRL 16.16
L508LA/L508C
101 RMII_RXD0 6.64
102 RMII_RXD1 14.48
30 WLAN_PDN（RGMII_RXD2） 32.45
84 GPIO_05（RGMII_RXD3） 24.37