nw6003 Integrated Device Technology, nw6003 Datasheet - Page 11

• Manufacturer Part Number: nw6003
• Description: Type Ii Caller Id Decoder
• Manufacturer: Integrated Device Technology

NW6003 TYPE II CALLER ID DECODER
Notes:
1) A= 75 - 85 ms, B= 0 -100 ms, C= 55 - 65 ms, D= 0 - 500 ms, E= 58 - 75ms, F depends on data length, G 50 ms.
2) If AC power is not available, the designer may use the line power when the CPE goes off-hook and use battery power while on-hook. The CPE should also be CID (on-hook) capable .
3) If the end office fails to send the FSK signal, the CPE should disable FSKEN to unmute the handset and enable the keypad after this interval.
4) When FSK signal is not expected, the FSKEN pin should be set low to disable the FSK demodulator.
5) FSKEN should be high as soon as the CPE has finished sending the acknowledgement signal ACK.
6) FSKEN should be low when CD become inactive.
A/B wires
FSKEN
PWDN
DCLK
DATA
STD
INT
CD
DR
Note 2
CPE off-hook
Figure 14. Bellcore Off-hook Data Transmission Timing Diagram
Note 4
CAS
A
B
CPE mutes handset and
disable keypad
CPE sends
ACK
C
11
Note 5
Note 3
D
Mark
E
Message
Data
F
...
...
INDUSTRIAL TEMPERATURE RANGE
Note 6
G
CPE unmutes handset and
enable keypad
Note 1