MSM7580

更新时间： 2024-02-06 01:24:04

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MSM7580 技术参数

¡ Semiconductor

MSM7580

In this device, internal operating signals are generated according to the ADPCM side SYNC

(SYNCA) signal.

The timings are shouwn in the figures (a) and (b);

The arithmetic operation of CODER is performed at "A" in the figure (a).

The arithmetic operation of DECODER is performed at "B" in the figure (b).

Therefore, when the conversion delay time Tsip of the CODER is less than t1, ADPCM is output

at the timing of Tsoa.

When Tsip is more than t1, ADPCM is output at the timing of Tsoa + 125ms.

For DECODER, when Tsia<t3 and Tsop<t2, the conversion delay time is Tsop-Tsia.

As mentioned above, a data ship may occur at Tsip=t1 in CODER, and at Tsia=t3 and Tsop=t2

in DECODER.

Therefore, the timings of SYNC signals of both PCM and ADPCM sides should not be set up in

the range about ±500nsec of Tsip=t1, Tsia=t3 and Tsop=t2.

For normal operation, SYNC clocks for ADPCM and PCM sides should be continuous at 8 kHz

and synchronized with each other even if their phases are different.

16/17

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型号	品牌	获取价格	描述	数据表
MSM7580GS-K	OKI	获取价格	暂无描述
MSM7581	OKI	获取价格	ITU-T G.721 4ch ADPCM TRANSCODER
MSM7581TS-K	OKI	获取价格	暂无描述
MSM7582	OKI	获取价格	pie/4 Shift QPSK MODEM
MSM7582B	OKI	获取价格	pie/4 Shift QPSK MODEM
MSM7582TS-K	OKI	获取价格	Modem, 384kbps Data, CMOS, PDSO32, 8 X 14 MM, 0.50 MM PITCH, PLASTIC, TSOP1-32
MSM7583	OKI	获取价格	pie/4 Shift QPSK MODEM
MSM7583GS-BK	OKI	获取价格	pie/4 Shift QPSK MODEM
MSM7584C	OKI	获取价格	pi /4 Shift QPSK MODEM/ADPCM CODEC
MSM7584CTS-K	OKI	获取价格	pi /4 Shift QPSK MODEM/ADPCM CODEC