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參數(shù)資料
| 型號(hào)： | W91040 |
| 文件頁(yè)數(shù)： | 3/11頁(yè) |
| 文件大?。?/td> | 202K |
| 代理商： | W91040 |
W91210 SERIES
Publication Release Date: May 1995
- 3 -
Revision A3
Pin Description, continued
SYMBOL
16-PIN
I/O
FUNCTION
HKS
9
I
Hook switch input.
HKS = 1: On-hook state. Chip in sleep mode, no operation.
HKS = 0: Off-hook state. Chip enabled for normal operation.
HKS pin is pulled to V
DD
by internal resistor.
DP/C4
10
O
N-channel open drain dialing pulse output (Figure 1). Flash key will
cause DP to be active in either tone mode or pulse mode.
DTMF
11
O
In pulse mode, remains in low state. In tone mode, outputs a dual or
single tone. Detailed timing diagram for tone mode is shown in
Figure 2(a, b).
OUTPUT FREQUENCY
Specified
Error %
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
Actual
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
R1
V
DD
, V
SS
12, 5
I
Power input pins.
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