Wi-Fi Module Developer's Guide

Chapter 3: Electrical and Environmental Specifications
May 31, 2008 Module Hardware Description 43
UART1:
21 TXD_N UART1 TXD O L
15K PU
V
IH
V
IL
V
OL
V
OH
I
OUT
< 8 mA
2
-0.3
2.575
0
3.15
0.8
0.4
V
11 RXD_N UART1 RXD I L
9 RTS_N UART1 RTS O L
15 CTS_N UART1 CTS I L
19 DTR_N UART1 DTR O L
13 DSR_N UART1 DSR I L
17 DCD_N UART1 DCD I L
23 RI_N UART1 RI I L
UART2:
29 RXD2 UART2 RXD I L
15K PU
V
IH
V
IL
V
OL
V
OH
I
OUT
< 8 mA
2
-0.3
2.75
0
3.15
0.8
0.4
V
31 TXD2 UART2 TXD O L
33 RTS2 UART2 RTS O L
35 CTS2 UART2 CTS I L
USB:
10
USB_VBUS
USB bus
power
OH
12 USB_DP USB bus
serial data
I/O H
14 USB_DN USB bus
serial data
I/O L
SIM Card:
50
SIM_PD_N
SIM presence
detect
O
Refer to G24
Hardware
Description-
6889192V27
Stacked
Configuration
48 SIM_VCC SIM supply I
44
SIM_RST_
N
SIM reset I
52 SIM_DIO SIM serial
data
I/O
46 SIM_CLK SIM clock I
Table 3-4: G24 Interface Specifications (Cont.)
Pin #
Signal
Name
Description I/O
Active
H/L
Internal
PU/PD
Parameter Conditions
Level
Min Typ Max Units