W925E240 Datasheet, PDF (63/73 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925E/C240
Line Reversal
A/B Wires
Alert Signal
Ch. Seizure Mark
Message
A
B
C
D
E
F
G
RNGON
Ring
ASE
CIDF
ALGO
TE DC load
TE AC load
...
...
t _REC
< 120uA
t _ABS
15 1 ms
< 0.5 mA (optiona)
Current wetting pulse (Refer to SIN227)
20 5 ms _{Note 1}
Zss (Refer to SIN227)
50 - 150 ms
Note 2
FSKE
Note 3
FCDN
FDRN
DCLK
DATA
...
...101010...
...
A >= 100mS
B = 88 - 100mS
C >= 45mS (up to 5Sec)
D = 80 - 262mS
Data
E = 45 - 75mS
F <= 2.5S (500mS typical)
G >= 200mS
Figure 7-4 Input and Output Timing of BT Idle State (On-hook) Data Transmission
Note:
1. SIN227 specifies that the AC and DC loads should be applied at 20 ± 5mS after the end of the dual tone alert signal.
2. SIN227 specifies that the AC and DC loads should be removed between 50 – 150mS after the end of the FSK signal.
3. The FSKE bit should be set low to disable the FSK decoder when FSK is not expected. The tone alerting signal speech
and the DTMF tones are in the same frequency band as the FSK signal.
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Publication Release Date: July 12, 2005
Revision A10