參數(shù)資料
型號(hào): MT9126
廠商: Mitel Networks Corporation
英文描述: Quad ADPCM Transcoder(四ADPCM編解碼器)
中文描述: 四差分PcM轉(zhuǎn)碼器(四差分PcM編解碼器)
文件頁(yè)數(shù): 9/25頁(yè)
文件大?。?/td> 138K
代理商: MT9126
MT9126
8-9
Figure 5 - SSI 16-Bit Linear PCM Relative Timing
ENB1
ENB2/F0od
EN1
ADPCM i/o
ADPCMi/o
16 kb/s
B
1
1234 1234 1234 1234
123x 123x 123x 123x
12
SEL = 1
SEL = 1
SEL = 0
BCLK
...
SEL for 16 kb/s only
(2.048 MHz only)
PCMi/o1
PCMi/o2
SSS 12 11 10 9 8 7 6 5 4 3 2 1 0
SSS 12 11 10 9 8 7 6 5 4 3 2 1 0
SSS 12 11 10 9 8 7 6 5 4 3 2 1 0
B1
B2
S = 3 bits sign extension
μ
Law is 13 bit 2’s complement data (bits 0 -12)
A-Law is 12 bit 2’s complement data (shifted left once and utilizing
bits 1 - 12, bit 0 not defined)
32 kb/s
24 kb/s
B3
B4
SSS 12 11 10 9 8 7 6 5 4 3 2 1 0
Notes:
B
2
B
3
B
4
12 12 12
B
1
12
B
2
B
3
B
4
12 12 12
B1
B2
B3
B4
1234 1234
123x 123x
B3
B4
B
1
12
B
2
B
3
B
4
12 12 12
X = undetermined logic level output; don’t care input
Outputs high impedance outside of channel strobe boundaries
Two frame delay from data input to data output
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參數(shù)描述
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