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參數(shù)資料
| 型號： | MSM6889 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Multi-Function Telecommunication LSI(多功能遠程通信收發(fā)LSI) |
| 中文描述： | 多功能電信大規(guī)模集成電路（多功能遠程通信收發(fā)LSI）的 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大?。?/td> | 159K |
| 代理商： | MSM6889 |
7/21
MSM6889
Semiconductor
Call progress tone (CPT) detect output.
When a CPT is detected, the waveform selected by ICT1 is output.
(See Fig. 9. )
O
CP
23
33
Description
I/O
Name
Pin Number
GS
RS
O
O
O
PB2
PB3
PB4
26
27
28
35
36
37
Receive PB tone code outputs.
The output impedance of these pins becomes high except when the
device operates as PB tone receiver. (See Fig. 7 and Fig. 8. )
+5 V power supply (digital circuit).
When power is turned on or the power down mode is released, the
device must be put into the PB tone transmit mode or PB tone
detect mode.
—
VD
34
42
O
PB1
25
34
PB tone receive data present.
Digital "1" represents that this pin is receiving the PB tone.
(See Fig. 8. )
Power down mode select. Digital "1" on this pin puts the whole
circuit of the device into the power down state.
No connection.
Power supply for digital interface output.
The supply voltage from +2.5 V to VD is possible for VD2. For
example, when the device interfaces to the MCU working on +3 V
supply, the +3 V supply has to be applied to the VD2 pin.
Note that this function is effective to all of digital output pins
except X1, X2, and CLK.
There is no restriction regarding the power supplies (VD and VD2)
applying procedure.
O
SP
30
38
I
PON
31
39
—
NC
—
40
—
VD2
32
41
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