W91031SG Nuvoton Technology Corporation of America, W91031SG Datasheet - Page 24

• Manufacturer Part Number: W91031SG
• Description: IC CALL LINE IDENT 24-SOIC
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W91031SG

• Function: Caller ID Device
• Interface: FSK
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 5 V
• Current - Supply: 2.5mA
• Operating Temperature: 0°C ~ 75°C
• Mounting Type: Surface Mount
• Package / Case: *
• Includes: FSK Demodulator, Line Reversal Detector, Ring Detector
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -

Notes :
1. The CPE designer may choose to wake up the W91031 only after the end of the RNGON signal to conserve power for
2. The CPE designer may choose to set FSKE to be always high while the CPE is on-hook, to ensure the FSK emodulator
3. The microcontroller places the W91031 in a sleep condition after FCDN has become inactive.
4. The W91031 may not be woken up at this ring signal after the FSK data has been processed.
5. If the W91031 has been woken up at the 2nd ring, the microcontroller times out if FCDN is not activated and then puts the
does not react to other in-band noise.
W91031 into a sleep condition.
a battery operated CPE. The delay from RNGON to SLEEP (and FSKE) is the reactive time of the microcontroller.
(M-mode
or C-mode)
(C-mode)
Tip/Ring
INTN
RNGON
SLEEP
FSKE
DET
FCDN
FDRN
DCLK
DATA
Figure 9-3. Input and Output Timing of Bellcore On-hook Data Transmission
1st Ring
Note 1
Note 2
A
B
A = 2 sec typical
B = 250 500 mS
C = 250 mS
D = 150 mS
E = Depends on data length
MAX C + D + E = 2.9 to 3.7 sec
F
Ch. seizure Mark
200 mS
...101010...
C
...
...
D
- 24 -
Message
Data
E
...
...
Note 3
F
Preliminary W91031
2nd Ring
Note 4
Note 5