Multitech SocketModem Cell MTSMC-L Series Device Manual page 17

Pinout Specifications
Pin Signal Name
J24 –RESET
J25 USB VBUS
J26 GND
J27 USB DP
J28 USB DN
J33 –RTS
J34 –RXD
J35 –TXD
J36 –RI
J37 –DSR
J38 –CTS
J39 –DCD
J40 –DTR
J41 GND
J58 –LED LINK
J61 VCC
J63 GND
1
A hyphen (-) indicates a range of acceptable logic levels.
Note: Except for RESET, connect unused I/O pins to GND. If RESET is unused, connect it to VCC
Pin Availability by Build
Pin
J24
J25
J26
J27
J28
J33
J34
J35
J36
®
SocketModem Cell MTSMC-Lxx Device Guide
Logic Level Voltage
3.3 – 5.0
3.3 – 5.0
GND
3.3
3.3
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
GND
3.3
5.0
GND
Signal Name
–RESET
USB VBUS
GND
USB DP
USB DN
–RTS
–RXD
–TXD
–RI
1
In/Out
I
I
GND
I/O
I/O
I
O
I
O
O
O
O
I
GND
O
PWR
GND
Serial Only USB Only
X X
X
X X
X
X
X
X
X
X
Description
Device reset (active low)
USB power supply input
Ground
USB data
USB data
Request to send (active low)
Received data (active low)
Transmitted data (active low)
Ring indicator (active low)
Data set ready (active low)
Clear to send (active low)
Data carrier detect (active low)
Data terminal ready (active low)
Ground
Link status (active low, can sink up to
150mA)
DC input power
Ground
SPECIFICATIONS
17