User's Manual

Universal Scientific Industrial Corp.
Doc No. Rev
1.4
Date.
2011/12/09
Page
9
Description
Product Specification – WM-G-MR-09-Ref2
6 INTERFACE
6.1 PIN DEFINITION
No Pin Name Type Description
1 GND GND Ground
2 RF PORT O Antenna Port (50ohm)
3 GND GND Ground
4 NC O NC
5 SD_D1 I/O
SDIO 4-bit Mode: Data Line Bit [1]
G-SPI Mode: G-SPI Data Output
6 SCLK I
NC
This is for Boot setting of ROM.
7 ECSn O
Boot from SPI EEPROM: Pull down by
100kohm
Boot from host Interface: NC
8 GND GND Ground
9 VDD_SHI I
Host I/F Voltage: 3.3V
Connect to 3.3V power supply
Host I/F Voltage: 1.8V
Connect to 1.8V power supply
Not need to prepare external 1.8V power supply
by connecting #9 and #17 (1.8V terminal)
10 GPIO_6 I/O General I/O Port , leave open if no use.
11 GPIO_5 I/O General I/O Port , leave open if no use.
12 SD_D3 I/O SDIO 4-bit Mode: Data Line Bit [3]
13 GPIO_2 I/O General I/O Port , leave open if no use.
14 SD_CLK I/O
SDIO 4-bit Mode: Clock Input
G-SPI Mode: G-SPI Clock Input
15 GPIO_4 I/O General I/O Port , leave open if no use.
16 GPIO_1 I/O
General I/O Port t , leave open if no use.
Default function : LED indicate.
17 VDD_18 POWER
1.8V DC monitor terminal , need 1uF
decoupling capacitor
18 VDD_12 POWER
1.2V DC monitor terminal , need 1uF
decoupling capacitor
19 GND GND Ground
20 SD_CMD I/O
SDIO 4-bit Mode: Command / Response
G-SPI Mode: G-SPI Data Input
21 SD_D0 I
SDIO 4-bit Mode: Data Line Bit [0]
G-SPI Mode: G-SPI Chip Select Input (Active
Low)
22 SD_D2 I/O
SDIO 4-bit Mode: Data Line Bit [2]
G-SPI Mode: G-SPI Interrupt Output (Active
Low)