Preliminary W91030B
Line Reversal
Alert Signal
Ch. Seizure Mark
Message
Ring
A/B Wires
A
B
C
D
E
F
G
RNGON
SLEEP
INTN
Note 4
...
...
tREC
tABS
ALGO
50 - 150 ms
15 1 ms
TE DC load
< 120 uA
< 0.5 mA (optional)
Current wetting pulse (Refer to SIN227)
20 5 ms
TE AC load
Zss (Refer to SIN227)
Note 1
Note 2
Note 3
FSKE
FCDN
FDRN
DCLK
DATA
...
...
A >= 100 ms
B = 88 - 110 ms
C >= 45 ms (up to 5 sec)
D = 80 - 262 ms
E = 45 - 75 ms
F <= 2.5 sec (500 ms typical)
G >= 200 ms
...101010...
Data
Figure 9-5. Input and Output Timing of BT Idle State (On-hook) Data Transmission
Notes:
1. SIN227 specifies that the AC and DC loads should be applied at 20 5 mS after the end of the dual tone alert signal.
±
2. SIN227 specifies that the AC and DC loads should be removed between 50 150 mS after the end of the FSK signal.
-
The W91030B may also be placed in a sleep condition.
3. The FSKE pin should be set low to disable the FSK demodulator when FSK is not expected. The tone alerting signal speech
and the DTMF tones are in the same frequency band as the FSK signal. If the FSKE pin can not controlled by microcontroller, the
FSKE pin must always placed in high state and the microcontroller must give up the FSK decoded data when the FSK signal is
not expected.
4. The W91030B may not be woken up at this ring signal after the FSK data has been processed.
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