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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(yuǎn)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(yuǎn)程通信收發(fā)LSI）的 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大?。?/td> | 159K |
| 代理商： | MSM6889 |
13/21
MSM6889
Semiconductor
Figure 3
The modulation analog signal and PB tone from the modem are not sent at a time. The signal to
be sent is determined by the operating mode specified.
This device is provided with the pins for specifying levels of these transmit signals independently.
The answer tones, which are generated from MODULATOR, are handled as modem signals.
VM : Modem signal level (voltage) at MOD (pin 9)
VP
: PB tone level (voltage) at PB (pin 10)
When the external resistors are R4, R5 and R6, the signal levels at AO (pin 5) are as shown below.
Note : R4, R5, R6
≥
20 k
W
As described in "Resistance Hybrid Condition", signal levels actually sent over a phone line will
be half the above mentioned values under the ideal condition.
Setup of Transmit Signal Levels
5
8
7
10
9
VAO
R4
R5
R6
VP
VM
AO
GAT2
GAT1
PB
MOD
PB Tone
Generator
Modulator
R4,R5,R6
≥
20 k
W
LPF
+
_
VAO (modem) = R4
￥
VM
R5
VAO (PB) = R4
￥
VP
R6
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PDF描述 |
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| MSM74017 | MODULATOR/DEMODULATOR FOR MODEM FUNCTION IN THE CELLULAR MOBILE PHONE |
| MSM7502 | Multi-Function PCM CODEC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM6889RS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function Telecommunication LSI |
| MSM6895 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM6895GS-BK | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM6896 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM6926 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:300 bps Single Chip FSK MODEM |
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