CPC5621ATR Clare, CPC5621ATR Datasheet - Page 8

• Manufacturer Part Number: CPC5621ATR
• Description: IC LITELINK III FULL RING 32SOIC
• Manufacturer: Clare
• Series: LITELINK® IIIr

Specifications of CPC5621ATR

• Function: Data Access Arrangement (DAA)
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 5.5 V
• Current - Supply: 9mA
• Power (watts): 1W
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-SOIC (7.5mm Width)
• Includes: Caller ID Signal Reception Function, Full-Wave Ring Detection
• For Use With: CLA165 - LITELINK III EVALUATION BOARDCLA164 - LITELINK III EVALUATION BOARD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Other names: CLA321TR; CPC5621ATR

CPC2400E
8
AT Command Set
Command
A
B
&C
D
Answer
Communication
Standard Option
Data Carrier
Detect Options
Dial
Function and Description
The A command makes the modem go off hook and respond to an incoming call. Use this command
after the modem has returned the RING result code.
If the modems successfully complete the answering process they each return a CONNECT result code
and enter the On-Line state.
If no transmit carrier signal is received from the calling modem within the time specified in S-register S7,
the modem hangs up, returns the NO CARRIER result code, and enters the Idle state.
Any commands following the answer command on the command line are ignored.
This command is aborted if a key is pressed before the answer process is completed, or when DTR is off
if some options in the &Q or &D commands have been used.
The B command tells the modem which special telephone line modulation standards to use. The
modem can be configured to use:
B0
B1
&C determines how the modem’s DCD signal relates to the carrier signal from the other
modem. This option takes effect only at the beginning of a telephone line connection. If &C is issued from
the Command state it will not have an immediate effect.
&C0
&C1
The D command makes the modem dial a telephone call according to the digits and dial modifiers in the
dial string following the command. Any commands following the dial string on a command line are
ignored unless the semicolon dial modifier is the last character in the dial string. If the modem was
already off hook when the Dial command was given, the modem dials immediately without trying to
detect a dial tone. Characters other than digits and dial modifiers in a dial string are ignored, but are
counted as characters in the command line buffer.
If line current sensing is enabled, and line current is detected before the modem is taken off-hook when
the modem needs to dial, a NO CARRIER result code is displayed and the modem enters the Idle state. If
the modem does not need to dial (i.e., ATD with no dial string), the modem assumes the call was manual-
ly established and attempts to make a connection.
The D command is not valid when the modem is in the On-Line state.
See DIAL MODIFIERS and MODEM RESULT CODES for more information.
Use the ITU-T modulation standards for all telephone line data rates. This includes V.22 for the
1200 bps telephone line data rate and V.21 for the 300 bps telephone line data rate.
Not Supported.
During asynchronous operation (&Q0 in effect) DCD is on at all times. During synchronous oper-
ation (&Q1) DCD reflects the state of the carrier signal from the other modem using S-registers
S9 and S10. This is the default value in North America.
Reflects the state of the carrier signal from the other modem using S-registers S9 and S10.
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Rev. 2