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參數(shù)資料
| 型號： | W91521A |
| 英文描述： | Tone/Pulse Telephone Dialer |
| 中文描述： | 音頻/脈沖電話撥號器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 193K |
| 代理商： | W91521A |
W91520N SERIES
Publication Release Date: May 1997
- 3 -
Revision A3
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
HKS
10
12
I
Hook switch input.
HKS = V
DD
: On-hook state. Chip in sleeping mode, no
operation.
HKS = V
SS
: Off-hook state. Chip is enabled for normal
operation.
HKS pin is pulled to V
DD
by internal resistor.
DP /C5
11
13
O
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).
V
DD
, V
SS
14, 6
16, 6
I
Power input pins.
H/P MUTE
5
5
O
The H/P MUTE is a conventional inverter output.
During pulse dialing, flash break, one-key redial break,
and hold period, this output is active high; otherwise, it
remains in low state.
DTMF
12
14
O
In pulse mode, this pin remains in low state at all times.
In the tone mode, it will output a dual or single tone.
Detailed timing diagram for tone mode is shown in
Figure 2(a, b, c).
Specified
697
Actual
699
Error %
+0.28
Output Frequency
R1
R2
R3
R4
C1
C2
C3
770
852
941
1209
1336
1477
766
848
948
1216
1332
1472
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W91520AN | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91520N | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521AN | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521N | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91540 | Tone/Pulse Telephone Dialer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W91521AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91530 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK,AND HANDFREE FUNCTION |
| W91530A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Tone/Pulse Telephone Dialer |
| W91530AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK,AND HANDFREE FUNCTION |
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