I NTEGRATED C IRCUITS D IVISION
Definitions
CPC2400E
Pin
J1-1
J1-2
J1-3
I/O
I
I
I
Name
V CC
GND
-DTR
Function
Connects to external host power source of +5V +/-5%
Power supply return
Data Terminal Ready. An active Low input on this pin indicates that the host system is ready to communicate with the
modem.
J1-4
O
-DCD
Data Carrier Detect. When active, indicates carrier signal has been detected. For options see AT Command reference
section under &C command.
J1-5
J1-6
J1-7
J1-8
J1-9
Pin
J2-1
J2-2
J2-3
J2-4
J2-5
O
O
-
I
O
I/O
-
I/O
-
I/O
-
-MUTE
A1
N/C
RXD
TXD
Name
NC
TIP
N/C
RING
NC
Mutes external speaker. Uses AT “M” command.
Analog output that can be used to monitor modem activity via an external audio ampli?er.
No Connection
Serial data input from host DTE
Serial data output to host DTE
Function
No Connection
Tip connection to telephone line
No Connection
Ring connection to telephone line
No Connection
*The Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written speci?cations, please
contact our application department.
R03
www.ixysic.com
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