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參數(shù)資料
| 型號： | MSM7590 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | 5V Sinlge-Rail ADPCM CODECs |
| 中文描述： | 5V的Sinlge擺幅差分PcM編解碼器 |
| 文件頁數(shù)： | 20/26頁 |
| 文件大?。?/td> | 173K |
| 代理商： | MSM7590 |
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20/26
Semiconductor
MSM7590L-01
This programmable gain table, not only for transmit/receive voice signal and the transmitted
DTMF and other tones. The transmission of these tone signals is enabled by the CR4-B6 data
described later. The original (reference) signal amplitude of these tones is analogically defined
as follows.
DTMF low-group-tones.................................... –16 dBm0
DTMF high-group-tones and others............... –14 dBm0
For example, when selecting +8 dB (B6, B5, B4) = (1,1,1) as a transmit gain, each tone signal
amplitude with an analogical expression on the pin PCMSO becomes as follows .
DTMF low-group tones .................................... –8 dBm0
DTMF high-group tones and other tones ...... –6 dBm0
Gain setting for the side tone (path to receive side from transmit side) and the receive side tone
is performed by register CR3.
(3) CR2 (PCM CODEC operational mode setting and transmit/receive gain adjustment)
B7 ... PCM Coder disable;
B6, B5, B4 ... Transmit gain adjustment, refer to Table-2.
B3 ... PCM Decoder disable;
B2, B1, B0 ... Receive gain setting, refer to Table-2.
0/Enable, 1/Disable (transmit PCM idle pattern)
0/Enable, 1/Disable (receive PCM idle pattern)
Table-2
B0
RX GAIN0
1
B1
RX GAIN1
1
B2
RX GAIN2
0
B3
RX ON/OFF
0
B4
TX GAIN0
1
B5
TX GAIN1
1
B6
TX GAIN2
0
B7
TX ON/OFF
0
CR2
Initial Value
B6
0
0
0
0
1
1
1
1
B5
0
0
1
1
0
0
1
1
B4
0
1
0
1
0
1
0
1
Transmit Gain
–6 dB
–4 dB
–2 dB
0 dB
+2 dB
+4 dB
+6 dB
+8 dB
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
Receive Gain
–6 dB
–4 dB
–2 dB
0 dB
+2 dB
+4 dB
+6 dB
+8 dB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7590L-01 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function ADPCM CODEC |
| MSM7590L-01TS-K | 制造商:ROHM Semiconductor 功能描述: |
| MSM75BM2L-0000I | 制造商:Microsemi Corporation 功能描述:FLASH MEMORY |
| MSM7602 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Echo Canceler |
| MSM7602-001 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Echo Canceler |
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