MT90502 Datasheet, PDF (28/191 Pages) Zarlink Semiconductor Inc – Multi-Channel AAL2 SAR

MT90502
Preliminary Datasheet
Format B for RX xxPCM Samples
(with Auto PCM-ADPCM Switching)
Format of PCM Samples
(for both padding and voice)
(with Decompressor reset indicated)
PCM-R
11
b7 b6 b5 b4 b3 b2 b1 b0
PCM Sample
Format of PCM Samples
(for both padding and voice)
(no Decompressor reset indicated)
PCM-R
10
b7 b6 b5 b4 b3 b2 b1 b0
PCM Sample
Format of ADPCM Samples in low bits
(with Decompressor reset indicated)
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
101
ADPCM 40 kbps
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
1001
32 kbps
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
10001
24 kbps
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
1 0 0 0 0 1 16 kbps
PCM-R
00
PCM-R
00
PCM-R
00
PCM-R
00
Format of ADPCM Samples in low bits
(no Decompressor reset indicated)
b7 b6 b5 b4 b3 b2 b1 b0
001
ADPCM 40 kbps
b7 b6 b5 b4 b3 b2 b1 b0
0001
32 kbps
b7 b6 b5 b4 b3 b2 b1 b0
00001
24 kbps
b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 0 1 16 kbps
Format of ADPCM Samples in high bits
(with Decompressor reset indicated)
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
ADPCM 40 kbps
101
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
32 kbps
1001
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
24 kbps
10001
PCM-R
01
b7 b6 b5 b4 b3 b2 b1 b0
16 kbps 1 0 0 0 0 1
Format of ADPCM Samples in high bits
(no Decompressor reset indicated)
PCM-R
00
b7 b6 b5 b4 b3 b2 b1 b0
ADPCM 40 kbps
100
PCM-R
00
b7 b6 b5 b4 b3 b2 b1 b0
32 kbps
1000
PCM-R
00
b7 b6 b5 b4 b3 b2 b1 b0
24 kbps
10000
PCM-R
00
b7 b6 b5 b4 b3 b2 b1 b0
16 kbps 1 0 0 0 0 0
Figure 10 - PCM/ADPCM RX Data Format B
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