Multitech MTSMC-C-N3 User Manual Page 11

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CHAPTER 3 SPECIFICATIONS
11
SocketModem EV-DO MTSMC-EV3 Device Guide
Pinout Specifications
Pin
Signal Name
Logic Level Voltage
1
I/O
Description
J24
RESET
3.3 5.0
I
Device reset (active low)
J25
USB VBUS
3.3 5.0
I
USB power supply input
J26
GND
GND
GND
Ground
J27
USB DP
3.3
I/O
USB data
J28
USB DM
3.3
I/O
USB data
J33
RTS
5.0
I
Request to send (active low)
J34
RXD
5.0
O
Received data (active low)
J35
TXD
5.0
I
Transmitted data (active low)
J36
RI
5.0
O
Ring indicator (active low)
J37
DSR
5.0
O
Data set ready (active low)
J38
CTS
5.0
O
Clear to send (active low)
J39
DCD
5.0
O
Data carrier detect (active low)
J40
DTR
5.0
I
Data terminal ready (active low)
J41
GND
GND
GND
Ground
J48
GPIO0
3.3
I/O
User configurable general purpose I/O
J49
GPIO1
3.3
I/O
User configurable general purpose I/O
J50
GPIO2
3.3
I/O
User configurable general purpose I/O
J51
GPIO3
3.3
I/O
User configurable general purpose I/O
J58
LED LINK
3.3
O
Link status (active low, can sink up to 150mA)
J61
VCC
5.0
PWR
DC input power
J63
GND
GND
GND
Ground
1
A hyphen (-) indicates a range of acceptable logic levels.
Pin 58
Note: Pin 58 may or may not be available on some SocketModems.
Pin 58 LED Mode
Operating Status
OFF
Subscriber Carrier Mode is OFF or running in SLEEP or ALARM mode.
600 ms ON/600ms OFF
No PIN entered, network search in progress, ongoing user authentication, or network
login in progress.
75 ms ON / 75 ms OFF /
75 ms ON
3 s OFF
Flashing or Blinking
One or more EDGE/GPRS/CDMA contexts activated. Indicates EDGE/GPRS/CDMA data
transfer: When a transfer is in progress, the LED goes on within 1 second after data
packets were exchanged.
Flash duration is approximately 0.5 s.
ON
Depending on call type:
Voice Call:
Connected to remote party.
Data Call:
Connected to remote party or parameter exchange while call is set up or
disconnected.
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