w925e625 ETC-unknow, w925e625 Datasheet - Page 63

• Manufacturer Part Number: w925e625
• Description: 8-bit Cid Microcontroller
• Manufacturer: ETC-unknow

Application Environment
There are three major timing differences for CID sequences, Bellcore, BT and CCA. Figure 6-27 is the
timing diagram for Bellcore on-hook data transmission and Figure 6-28 is the timing diagram for the
Bellcore off-hook data transmission. Figure 6-29 is the timing diagram for the BT caller display service
on-hook data transmission and Figure 6-30 is the timing diagram for the BT caller display service off-
hook data transmission. Figure 6-31 is the timing diagram for the CCA caller display service for on-
hook data transmission. The CID flag (CIDF) must be cleared by software when each time the CID
interrupt routine is serviced. The CID global enable signal (CIDE) must be set high.
Tip/Ring
FDATA
FCLK
FSKE
CIDF
RNG
FCD
FDR
Figure 6-27 Input and Output Timing of Bellcore On-hook Data Transmission
1st Ring
A
B
Ch. seizure
...101010...
C
...
...
Mark
D
- 63 -
Message
Data
E
...
...
F
A = 2 sec typical
B = 250-500mS
C = 250mS
D = 150mS
E = depend on data length
MAX C+D+E = 2.9 TO 3.7 sec
F >= 200mS
Publication Release Date: July 4, 2005
2nd Ring
W925E/C625
Revision A10