CC-2401K2A-CS5 Copeland Communications Inc, CC-2401K2A-CS5 Datasheet - Page 13

• Manufacturer Part Number: CC-2401K2A-CS5
• Description: MODEM 2400BAUD SECURE 5V
• Manufacturer: Copeland Communications Inc

Specifications of CC-2401K2A-CS5

• Data Format: V.21, V.22, V.23, Bell 103
• Baud Rates: 2.4k
• Interface: UART
• Voltage - Supply: 4.2 V ~ 7 V
• Mounting Type: Surface Mount
• Package / Case: Module
• For Use With: 539-1002 - KIT EVALUATION WORLD MODEM II
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 539-1009; CC-2401K2A-CS5

© 2007, Copeland Communications, Inc.
During this event, if the NLR result code is enabled by setting S62[1](NLR) = 1, the “I” result code is sent.
Once the loop current returns to a normal current state, the “L” result code is sent. The INT# pin is also
asserted if enabled.
Loss of Carrier Detection
The CC-2401 has two methods of implementing a loss of carrier function. If GPIO4 is programmed as INT#
and if S08[7](CDM)=1, INT# asserts in data mode when a loss of carrier is detected. The carrier detect
function may also be implemented on GPIO2 by setting SE2[3:2] (GPIO2) = 01 and SOC[7](CDE) = 1.
Overcurrent Detection
The CC-2401 begins monitoring for an overcurrent condition at a programmable time set by S32 (OCDT) after
going off-hook (default = 20ms). If an overcurrent condition is detected, the CC-2401 sets S09[1] interrupt
status.
S08[1](OCDM) = 1, INT asserts during an overcurrent situation. The host may then check S09[1] (OCD) via
the AT:I command to confirm that an overcurrent condition occurred.
Caller ID Monitor/Bellcore Caller ID
The CC-2401 continuously monitors the phone line for the caller ID mark signals. This can be useful in
systems that require detection of caller ID data before the ring signal, voice mail indicator signals and Type II
caller ID monitor support. To force the CC-2401 into caller ID monitor mode, set SOC[6:5] (CIDM) = 11.
NOTE: CIDM should be disabled before going off-hook.
UK Caller ID
The CC-2401 starts searching for the Idle State Tone Alert Signal. When this signal has been detected, the
modem transmits an “a” to the host. After the Idle State Tone Alert Signal is completed, the modem applies
the wetting pulse for the required 15 ms by quickly going off-hook and on-hook. From this point on, the
algorithm is identical to that of Bellcore in that it searches for the channel seizure signal and the marks before
echoing an “m” and then reports the decoded caller ID data.
V.23 Operation / V.23 Reversing
The CC-2401 supports full V.23 operation including the V.23 reversing procedure. V.23 operation is enabled
by setting S07 (MF1) = xx10xx00
and receives data at 600 or 1200 bps. If S07[4] (V23T) = 1, the CC-2401 Receives data at 75 bps and
transmits data at 600 or 1200 bps. S07[2] (BAUD) is the 1200 or 600 bps indicator. BAUD = 1
1200/600 V.23 channel to run at 1200 bps, while BAUD = 0
When a V.23 connection is established, the modem responds with a “c” if the connection is made with the
modem transmitting at 1200/600 bps and receiving at 75 bps. The modem responds with a “v” character if a
V.23 connection is established with the modem transmitting at 75 bps and receiving at 1200/600 bps.
The CC-2401 supports V.23 turnaround procedure, allowing a modem that is transmitting at 75 bps to initiate a
“turnaround” procedure so it can begin transmitting data at 1200/600 bps and receiving data at 75 bps. The
modem is defined as being in V.23 master mode if it is transmitting at 75 bps and as being in slave mode if it is
transmitting at 1200/600 bps.
Modem in Master Mode
To perform a direct turnaround once a modem connection is established, the master host goes into online
command mode by sending an escape command (Escape pin activation, TIES, or ninth bit escape) to the
master modem.
NOTE: The host can initiate a turnaround only if the CC-2401 is the master.
As long as GPIO4 is programmed as INT and the overcurrent mask bit is enabled by setting
b
of xx01xx00
Page 13 of 66
Data Sheet
b
. If S07[5] (V23R) = 1, the CC-2401 receives data at 75 bps
b
enables 600 bps operation.
CC-2401K2 Datasheet Rev 1.5
CC-2401K2
b
enables the