Chapter 3: Electrical and Environmental Specifications
May 31, 2008 Module Hardware Description 43
UART1:
21 TXD_N UART1 TXD O L
15K PU
VIH
VIL
VOL
VOH
IOUT < 8 mA
2
-0.3
2.575
0
3.15
0.8
0.4
V
11 RXD_N UART1 RXD I L
9RTS_N UART1 RT S 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
VIH
VIL
VOL
VOH
IOUT < 8 mA
2
-0.3
2.75
0
3.15
0.8
0.4
V
31 TXD2 UART2 TXD O L
33 RTS2 UART 2 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