am79c02 Advanced Micro Devices, am79c02 Datasheet - Page 45
am79c02
Manufacturer Part Number
am79c02
Description
Dual Subscriber Line Audio Processing Circuit Dslac Devices
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C02.pdf
(48 pages)
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Notes:
1. 8159 normalized value units correspond to TMAX = 3.17 dBm0.
2. The character signal corresponding to positive input values between two successive decision values numbered n and n+1
3. The value at the decoder is y
4. x
5. Bit 1 is a 0 for negative input values.
(see column 4) is 255-n, expressed as a binary number.
128
is a virtual decision value.
Segment
Number
1
3
2
1
4
8
6
5
7
# Intervals
x Interval
16 x 256
16 x 128
16 x 64
16 x 32
16 x 16
15 x 2
16 x 8
16 x 4
1 x 1
Size
2
0
= x
End Points
0
Segment
Value at
= 0 for n = 0, and
8159
4063
2015
991
479
223
Table 2. -Law: Positive Input Values
95
31
3
Decision
Number n
Value
(128)
127
113
112
SLAC Products
97
96
81
80
65
64
49
48
33
32
17
16
2
1
0
4
y
n
=
(See Note 1)
x
------------------------
Decision
Value x
n
(8159)
+
7903
4319
4063
2143
2015
1055
991
511
479
239
223
103
1
95
35
31
2
3
1
0
5
+
x
n
n
, for n = 1, 2,...127.
1 2 3 4 5 6 7 8
1 0 0 0 0 0 0 0
1 0 0 1 1 1 1 1
1 1 1 1 1 1 1 1
Inversion of
1 0 0 0 1 1 1 1
1 1 0 1 1 1 1 1
1 1 1 1 1 1 1 0
1 1 1 0 1 1 1 1
1 0 1 0 1 1 1 1
1 1 0 0 1 1 1 1
Character
Signal pre
Even Bits
1 0 1 1 1 1 1 1
See Note 2
See Note 2
See Note 2
See Note 2
See Note 2
See Note 2
See Note 2
See Note 2
Bit No.
6
Quantized
Value (at
Output) y
Decoder
8031
4191
0
2079
33
1023
231
2
495
99
7
n
Decoder
Value No.
Output
127
112
0
96
16
1
80
64
48
32
8
45