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
O
H
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
Содержание W24
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