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參數資料
| 型號： | W91031S |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Calling Line Identifier |
| 中文描述： | 來電線路識別 |
| 文件頁數： | 22/29頁 |
| 文件大小： | 274K |
| 代理商： | W91031S |
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Preliminary W91031
- 22 -
APPLICATION INFORMATION
Application Circuit
The application circuit of the W91031 in Figure 9-1 shows the device being used within a typical CPE
system. Note that only the circuit between the W91031 and the line interface is shown. The gain
control op-amp is set to unity gain to allow the electrical characteristics to be met in this application
circuit. It should also be noted that if a glitch with sufficient amplitude appears on the tip and ring
interface, this will be detected as a ringing input by this circuit.
Tip/A
INP
INN
GCFB
VREF
TEST1
RNGDI
RNGRC
RNGON
MODE
OSCI
OSCO
VSS
VDD
ALGRC
ALGR
ALGO
INTN
FCDN
FDRN
DATA
DCLK
FSKE
SLEEP/
RESET
TEST2
34K
430K
22nF
430K
22nF
Ring/B
34K
464K
60K4
0.1 uF
150K
0.22uF
200K
300K
0.1uF
0.1uF
R2
R1
53K6
W91031
FSK 3-wire interface Mode 0 selected.
Resistor must have 1% tolerance.
Resistor may have 5% tolerance.
Crystal is 3.579545MHz with 0.1% frequency tolerance.
470K
470K
0.1uF
10K
R1, R2 must calculated according to the formula of Figure 7-6(a)
for Bellcore or BT application.
Must rest by
microcontroller
or by RC pulse.
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
Figure 9-1. Application Circuit.
Another application circuit for the W91031, which provides common mode rejection of ringing circuit
signals, is shown in Figure 9-2. When the AC voltage between the tip and ring is greater than the
zener diode breakdown voltage, the photo-coupler LED will turn on, driving RNGDI high and thus
detecting a ringing signal. Note however in this case, a glitch on the tip and ring interface is not able
to turn on the photo-coupler and therefore will not be detected as a ringing signal.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W91031SG | 功能描述:IC CALL LINE IDENT 24-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS 產品變化通告:Product Discontinuation 06/Feb/2012 標準包裝:750 系列:* |
| W91031SG (SA5825) TR | 制造商:Nuvoton Technology Corp 功能描述:FSK DECORDER WITH CALL ON WAIT |
| W91031SG T&R | 制造商:Nuvoton Technology Corp 功能描述:IC CALL LINE IDENT 24-SOIC |
| W91031SG T&R | 功能描述:IC CALL LINE IDENT 24-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS 產品變化通告:Product Discontinuation 06/Feb/2012 標準包裝:750 系列:* |
| W91040 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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