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參數(shù)資料
| 型號(hào)： | MSM7580 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | ITU-T G.721 ADPCM TRANSCODER |
| 中文描述： | ITU - T的G.721差分PcM碼器 |
| 文件頁數(shù)： | 14/18頁 |
| 文件大?。?/td> | 207K |
| 代理商： | MSM7580 |
14/17
Semiconductor
MSM7580
NOTES ON USAGE
(1) Through Mode (CODER Side)
BCLK
PCM side SYNC (SYNCP)
PCM Input (SIP)
Internal Latch Timing
ADPCM side SYNC (SYNCA)
ADPCM side SYNC (SYNCA)
Through-Data Output (SOA)
Through-Data Output (SOA)
t0
t1
1
2
3
4
5
6
7
8
PCMDATA1
ADPCMDATA0
ADPCMDATA1
ADPCMDATA2
PCMDATA2
PCMDATA3
ADPCMDATA0
ADPCMDATA1
*
t1 is the falling edge of the 8th BCLK counted from t0.
(A) When SYNCA rises after t1, PCMDATA1 is output to ADPCMDATA1.
(B) When SYNCA rises before t1, PCMDATA1 is output to ADPCMDATA1.
If SYNCA rises near the t1 and jitter occurs, data slip may occur. Therefore SYNCA should not rise in the range of ±500ns from t1.
Data slip means that data is deleted or the same data is output twice.
(A)
(B)
(2) Through Mode (DECODER Side)
BCLK
ADPCM side SYNC (SYNCA)
ADPCM Input (SIA)
Internal Latch Timing
PCM side SYNC (SYNCP)
PCM side SYNC (SYNCP)
Through-Data Output (SOP)
Through-Data Output (SOP)
t0
t1
1
2
3
4
5
6
7
8
ADPCMDATA1
PCMDATA0
PCMDATA1
PCMDATA2
ADPCMDATA2
ADPCMDATA3
PCMDATA0
PCMDATA1
*
t1 is the falling edge of the 8th BCLK counted from t0.
(A) When SYNCA rises after t1, ADPCMDATA1 is output to PCMDATA1.
(B) When SYNCA rises before t1, ADPCMDATA1 is output to PCMDATA1.
If SYNCP rises near the t1 and jitter occurs, data slip may occur. Therefore SYNCA should not rise in the range of ±500ns from t1.
Data slip means that data is deleted or the same data is output twice.
(A)
(B)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM7581 | ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | pie/4 Shift QPSK MODEM |
| MSM7582B | pie/4 Shift QPSK MODEM |
| MSM7583GS-BK | pie/4 Shift QPSK MODEM |
| MSM7583 | pie/4 Shift QPSK MODEM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7580GS-K | 制造商:ROHM Semiconductor 功能描述: |
| MSM7581 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:ITU-T G.721 4ch ADPCM TRANSCODER |
| MSM7582 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7582B | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
| MSM7583 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:pie/4 Shift QPSK MODEM |
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