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參數(shù)資料
| 型號(hào)： | W91472NS |
| 英文描述： | Telephone Dialer |
| 中文描述： | 電話撥號(hào)器 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 184K |
| 代理商： | W91472NS |
W91472N SERIES
Publication Release Date: May 1997
- 3 -
Revision A2
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
MODE
13
15
I
Pulling mode pin to V
SS
places dialer in tone mode.
Pulling mode pin to V
DD
places dialer in pulse mode
with M/B ratio of 40:60 (10 ppS, except for
91472BN/472CN = 20 ppS).
Leaving mode pin floating places dialer in pulse mode
with M/B ratio of 33.3:66.7 (10 ppS, except for
W91472BN/472CN = 20 ppS).
HKS
10
12
I
The HKS input is used to sense whether the handset is
on-hook or off-hook.
In on-hook state, HKS = 1: chip is in sleeping mode, no
operation.
In off-hook state, HKS = 0: chip is enabled for normal
operation.
HKS pin is pulled to V
DD
by internal resistor.
N-channel open drain dialing pulse output.
Flash key will cause DP to be active in either tone mode
or pulse mode.
The timing diagram for pulse mode is shown in Figure 1
(a, b, c, d).
During pulse dialing, this pin remains in low state
regardless of keypad input. In the tone mode, it will
output a dual or single tone.
A detailed timing diagram for tone mode is shown in
Figure 2 (a, b, c, d).
DP /C6
11
13
O
DTMF
12
14
O
R1
R2
R3
R4
C1
C2
C3
Specified
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
Actual
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
Error %
OUTPUT FREQUENCY
V
DD
, V
SS
14, 6
16, 6
I
Power input pins for the dialer chip. V
DD
is the main
power and V
SS
is the ground.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W91520 | Tone/Pulse Telephone Dialer |
| W91520A | Tone/Pulse Telephone Dialer |
| W91520NS | Telephone Dialer |
| W91521 | Tone/Pulse Telephone Dialer |
| W91521A | Tone/Pulse Telephone Dialer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W91473 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473AL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473BL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
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