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MT9126AS

Part # MT9126AS
Description ADPCM Voice Compression G.72616Kbps/24Kbps/32Kbps 5V 28-P
Category IC
Availability In Stock
Qty 14
Qty Price
1 - 2 $18.36817
3 - 5 $14.61104
6 - 8 $13.77613
9 - 11 $12.80206
12 + $11.41053
Manufacturer Available Qty
ZARLINK
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

MT9126 Preliminary Information
8-42
Figure 6 - SSI PCM and ADPCM Bypass Relative Timing
ADPCMo/i
BCLK
ENB1
ENB2/F0od
PCMi/o1
765 34 210
B1 B2
765 34 210
PCMi/o2
765 34 210
B3 B4
765 34 210
765 34 210
765 34 210
SEL = 0
ADPCMo/i
PCMi/o1
123 x4 xxx
SEL = 1
B1 B2
PCMi/o2
B3 B4
SEL = 0
123 x4 xxx
123 x4 xxx
12341234 1234 1234
ADPCM o/i
PCMi/o1
PCMi/o2
12x xx xxx
B1
B2
B3 B4
12x xx xxx
12x xx xxx 12x xx xxx
12121212 1212 1212
B1 B2 B3 B4 B1 B2 B3 B4
32 kb/s using bits 1 2 3 4
24 kb/s where bit 4 = x
16 kb/s
SSI PCM
Bypass
SSI ADPCM
Bypass
SEL = 1
123 x4 xxx
X = undetermined logic level output; don’t care input
Two frame delay from data input to data output
Outputs high impedance outside of channel strobe boundaries
Preliminary Information MT9126
8-43
Figure 7 - ST-BUS 8-bit Companded PCM Relative Timing
MCLK (C4)
F0i
ADPCMi
ADPCMo
C2o (output)
B1
B2
B3
B4
EN1 (output)
EN2 (output)
PCMi2
PCMo2
B3
B4
PCMi1
PCMo1
B1 B2DC
D
C
B1
SEL=0 SEL=1
B2 B4B3
B1 B2 B4B3
B1 B2 B4B3
B1 B2 B4B3
32 kb/s is shown
In 24 kb/s, bit 4 becomes “X”
16 kb/s
SEL operates for
ENB2/F0od
7654
7654321
0
321
0
7654
7654321
0
321
0
7654
76543210
3210
01
7654
3210
121 21212121 21212
121 21
212
121 21
212
123 4
123 41234
1234
7654
7654
3210
3
210
01
76543
210
transparent relay of D- and C- channels
when ENB1=0
01
7654
3210
123 4
123 41234
1234
01
7654
3210
outputs=High impedance
inputs = don’t care
X = undetermined logic level output; don’t care input
Two frame delay from data input to data output
Outputs high impedance outside of channel boundaries
16 kb/s only
MT9126 Preliminary Information
8-44
Figure 8 - ST-BUS 16-bit Linear PCM Relative Timing
MCLK (C4i)
F0i
C2o
ADPCMi/o
Note: D &C channels not supported in this mode.
SEL operated for
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
SSS 12 11 10 9 8 7 6 5 4 3 2 1 0
B1 B2
B3
B4
ADPCMi/o
(32/24 kb/s)
(16 kb/s)
F0od/ENB2
EN1
(output)
bit 4 = x at 24 kbit/s
B
1
12
SEL = 1
SEL = 0
B
2
B
3
B
4
12 12 12
B
1
12
B
2
B
3
B
4
12 12 12
1234 1234 1234 1234
B1 B2
B3
B4
16kb/s only
outputs = High impedance
inputs = don’t care
X = undetermined logic level output; don’t care input
Two frame delay from data input to data output
Outputs high impedance outside of channel boundaries
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