CMX602B Consumer Microcircuits Limited, CMX602B Datasheet - Page 18
CMX602B
Manufacturer Part Number
CMX602B
Description
Calling Line Identifier Plus Call Waiting Type ii
Manufacturer
Consumer Microcircuits Limited
Datasheet
1.CMX602B.pdf
(25 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CMX602BP3
Manufacturer:
EPCOS
Quantity:
12 000
Calling Line Identifier
2.
3.
2003 CML Microsystems Plc
The IRQN output going low when in Tone Alert Detect mode indicates that a CAS has been
detected. The local handset and keypad should then be muted as required by the Bellcore
specification and the CMX602B switched to FSK Receive mode to be ready to receive the FSK
data, doing this will also clear the IRQN output.
The CMX602B’s DET output should be monitored for a period of 50ms after changing to FSK
Receive mode, before sending the ACK signal, and the transaction abandoned if the DET output
goes high during this time, which would be the case if a false CAS detect had been caused by far
end speech.
Figure 9b : Flow Chart for Off-hook Operation of CMX602B
18
CMX602B
D/602B/2