Multitech MultiConnect MTPCIE-EV3 Developer's Manual page 52

SPECIFICATIONS
PIN # Name
41 3.3Vaux
42 LED_WWAN#
43 GND
44 DCD
45 CTS
46 GPIO_3
47 RTS
48 DTR
49 RXD
52
I/O Function
I 3.3Vaux
O 3G Cellular STAT LED
Output
Ground
O 3G Cellular UART DCD 1.8V
O 3G Cellular UART CTS
I/O 3G Celllular General
purpose I/O
I 3G Cellular UART RTS
I 3G Cellular UART DTR
O 3G Cellular UART
Receive data
Type Notes
1.8V Command to enable LED
function, AT#GPIO=1,0,2.
This pin needs an
external transistor to
drive an external LED.
Therefore, status
indicated is reversed
with respect to the pin
status:
Permanently off = Device
off
Fast blinking (Period 1s,
Ton 0.5s) = Net search /
Not registered / turning
off
Slow blinking (Period 3s,
Ton 0.3s) = Registered
full service
Permanently on = a
voice call is active
1.8V
1.8V AT#GPIO=3,x,x
1.8V Avoid having any HIGH
logic level signal applied
to any 3G input digital
pins when the 3G
module is powered off
or during an ON/OFF
transition.
1.8V Avoid having any HIGH
logic level signal applied
to any 3G input digital
pins when the 3G
module is powered off
or during an ON/OFF
transition.
1.8V
®
MultiConnect PCIe MTPCIE-EV3 Developer Guide
MTPCIE-EV3