Application Interface Specifications
38 Module Hardware Description May 31, 2008
UART1:
21 TXD_N UART1 TXD I L 15K PU VIH IOUT < 8 mA 2 3.15 V
11 RXD_N UART1 RXD O L
VIL
VOL
VOH
IOUT < 8 mA
-0.3
2.575
00.8
0.4
V
9RTS_N UART1 RT S I L
15 CTS_N UART1 CTS O L
19 DTR_N UART1 DTR I L
13 DSR_N UART1 DSR O L
17 DCD_N UART1 DCD O L
23 RI_N UART1 RI O L
UART2:
29 RXD2 UART2 RXD O L 15K PU
VIH
VIL
VOL
VOH
IOUT < 8 mA
2
-0.3
2.75
0
0
3.15
0.8
0.4
V
31 TXD2 UART2 TXD I L 15K PU
33 RTS2 UART2 RT S I L 15 K PU
35 CTS2 UART2 CTS O L 15K PU
USB:
10 USB_VBUS USB bus
power
IH 5.05.25V
12 USB_DP USB bus
serial data
I/O H V
14 USB_DN USB bus
serial data
I/O L V
SIM Card:
50 SIM_PD_N SIM presence
detect
I
Refer to G24
Hardware
Description-
6889192V27
Stacked
Configuration
48 SIM_VCC SIM supply O
44 SIM_RST_
N
SIM reset O
52 SIM_DIO SIM serial
data
I/O
46 SIM_CLK SIM clock O
Table 3-3:Host Interface Specifications (Cont.)
Pin # Signal
Name Description I/O Active
H/L Internal
PU/PD Parameter Conditions
Level
Min Typ Max Units