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參數(shù)資料
| 型號： | MSM7575 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | Multi-Function ADPCM CODEC(多功能ADPCM(自適應差分脈沖編碼調制）編碼譯碼器) |
| 中文描述： | 多功能差分PcM編解碼器（多功能差分PcM（自適應差分脈沖編碼調制）編碼譯碼器） |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 187K |
| 代理商： | MSM7575 |
21/25
Semiconductor
MSM7575
(4) CR3 (Side tone and other tone generator gain setting)
The tone generator gain setting table for receive side, shown by Table-4, depends upon the
following reference level.
DTMF low-group tones ................................–2 dBm0
DTMF high-group tones and others............ 0 dBm0
For example, when selecting –6 dB (B3, B2, B1, B0) = (1, 1, 1, 1) as a tone generator gain, each DTMF
tone signal amplitude on SAO or VFRO is as follows.
DTMF low-group tone..................................–8 dBm0
DTMF high-group tone or other tones.......–6 dBm0
B7, B6, B5 ... Side tone path gain setting, refer to Table-3.
B4 ... Tone generator enable :
B3, B2, B1, B0 ... Tone generator gain adjustment for receive side, refer to Table-4
0/Disable, 1/Enable
Table-3 Side Tone Gain Setting Table
B7
0
0
0
0
1
1
1
1
B6
0
0
1
1
0
0
1
1
B5
0
1
0
1
0
1
0
1
Side Tone Path Gain
OFF
–21 dB
–19 dB
–17 dB
–15 dB
–13 dB
–11 dB
–9 dB
Table-4 Receive Tone Generator Gain Setting Table
Side. Tone
GAIN2
Initial Value
CR3
Side. Tone Side. Tone
GAIN1
TONE
ON/OFF
TONE
GAIN3
TONE
GAIN2
TONE
GAIN1
TONE
GAIN0
0
0
0
0
0
0
0
0
B7
B6
B5
B4
B3
B2
B1
B0
GAIN0
B3
0
0
0
0
0
0
0
0
B2
0
0
0
0
1
1
1
1
B1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
Tone Generator Gain
–36 dB
–34 dB
–32 dB
–30 dB
–28 dB
–26 dB
–24 dB
–22 dB
B3
1
1
1
1
1
1
1
1
B2
0
0
0
0
1
1
1
1
B1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
Tone Generator Gain
–20 dB
–18 dB
–16 dB
–14 dB
–12 dB
–10 dB
–8 dB
–6 dB
相關PDF資料 |
PDF描述 |
|---|---|
| MSM7576 | LSI |
| MSM7577 | Voice Signal Level Control LSI |
| MSM7580 | ITU-T G.721 ADPCM TRANSCODER |
| MSM7581 | ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | pie/4 Shift QPSK MODEM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7576 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:LSI |
| MSM7577 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Voice Signal Level Control LSI |
| MSM7578 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7578H | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7578HG3-K | 制造商:ROHM Semiconductor 功能描述: |
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