W91031SG Nuvoton Technology Corporation of America, W91031SG Datasheet - Page 23

• 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): -

Application Environment
There are three major timing differences for caller ID sequences, Bellcore, BT and CCA. Figure 9-3 is
the timing diagram for the Bellcore on-hook data transmission and Figure 9-4 is the timing diagram
for the Bellcore off-hook data transmission. Figure 9-5 is the timing diagram for the BT caller display
service on-hook data transmission and Figure 9-6 is the timing diagram for the BT caller display
service off-hook data transmission. Figure 9-7 is the timing diagram for the CCA caller display service
for on-hook data transmission.
Tip/A
Ring/B
0.33uF
12K
Crystal is 3.579545MHz with 0.1% frequency tolerance.
0.1uF
Resistor must have 1% tolerance.
Resistor may have 5% tolerance.
22nF
22nF
Figure 9-2. Application Circuit with Improved Common Mode Noise Immunity
430K
430K
Vz
+
-
V
V
DD
DD
V
DD
470K
34K
34K
200K
0.01uF
53K6
60K4
V
0.1 uF
DD
150K
0.22uF
- 23 -
V
464K
R1, R2 must calculated according to the formula of Figure 7-6(a)
for Bellcore or BT application.
FSK 3-wire interface Mode 0 selected.
DD
INP
INN
GCFB
VREF
TEST1
RNGDI
RNGRC
RNGON
MODE
OSCI
OSCO
VSS
W91031
Publication Release Date: August 2000
Preliminary W91031
ALGRC
SLEEP/
RESET
TEST2
ALGR
ALGO
DATA
DCLK
FSKE
FCDN
FDRN
INTN
VDD
V
DD
R1
V
Must reset by
microcontroller
or by RC pulse.
DD
0.1uF
R2
V
DD
Revision A1