nw6005 Integrated Device Technology, nw6005 Datasheet - Page 11

• Manufacturer Part Number: nw6005
• Description: Enhanced Type Ii Caller Id Decoder
• Manufacturer: Integrated Device Technology

NW6005 ENHANCED TYPE II CALLER ID DECODER
Notes:
1) A= 2 sec typ., B= 250 - 500 ms, C= 250 ms, D= 150ms, E depends on data length, Max C+D+E = 2.9 - 3.7 sec, F 200 ms.
2) In a battery operated CPE, NW6005 may be enabled only after the end of ringing to conserve power.
3) The microcontroller in the CPE powers down the NW6005 after CD goes inactive.
4) The microcontroller times out if CD is not activated on the 2nd ring and puts the device into Power-down mode.
5) FSK may be always enabled while the CPE is on-hook. To prevent the FSK demodulator from reacting to other inband signals such as speech, DT-AS or DTMT tones. The designer may
choose to disable FSKduring the period that FSK signal is not expected.
6) PWDN and FSKEN are internal signals decoded from Control Bits CB2-0.
7) When CB0 is low, both DR and DCLK pins are unused.
A/B Wires
Note6
Note6
PWDN
FSKEN
Note7
DCLK
Note7
DATA
CD
DR
Alerting Signal
Note 5
Note 2
1st Ringing
A
Figure 11. Bellcore On-hook Data Transmission Timing Diagram
B
Ch. Seizure
C
..101010..
...
11
Mark
D
Message
E
Data
...
F
Note 3
INDUSTRIAL TEMPERATURE RANGE
Note 2
2nd Ringing
Note 4
Note 1