AM79C03 AMD [Advanced Micro Devices], AM79C03 Datasheet - Page 40

• Manufacturer Part Number: AM79C03
• Description: Dual Subscriber Line Audio Processing Circuit (DSLAC) Devices
• Manufacturer: AMD [Advanced Micro Devices]

39. Read Error Level Threshold
40. Write GZ Filter Coefficient
41. Read GZ Filter Coefficient
42. Write Adaptive B Filter Control Coefficients
40
(8Fh)
(92h)
(93h)
(90h)
RSVD
The coefficient, GZ, is defined as:
The default value after any reset is GZ = 0 hex for a gain of 1.
The equations for the decorrelation threshold coefficients are:
The equation for the low level signal threshold coefficient is:
The equation for the digital prebalance threshold coefficient is:
Command
Output Data Byte 1
Command
Input Data
Command
Output Data
New to Revision E
Command
Input Data
Input Data
Input Data
Input Data
Input Data
Reserved. Always write as 0, but 0 is not guaranteed when read.
GZ
DCR1
DCR2
LST
DPB
=
=
=
C10 2
=
=
C12 2
C13 2
C10 2
C11 2
Am79C02/03/031(A) Data Sheet
–
m10
–
–
m12
m13
–
–
m10
m11
1
1
+
1
1
+
C10
C20
C10
C20
C21
C32
C12
C23
D
D
D
D
+
+
C22 2
C23 2
1
1
1
1
7
7
7
7
C20 2
C21 2
–
–
m22
m23
D
D
D
D
–
–
0
0
0
0
m20
m21
6
6
6
6
1
1
+
+
C32 2
C33 2
m20
m10
m10
m20
m21
m32
m12
m23
D
D
D
D
0
0
0
0
5
5
5
5
–
–
m32
m33
D
D
D
D
0
1
1
1
4
4
4
4
RSVD
RSVD
C10
C10
C11
C22
C33
C13
D
D
D
D
1
0
0
0
3
3
3
3
RSVD
RSVD
D
D
D
D
1
0
0
0
2
2
2
2
RSVD
RSVD
m10
m10
m11
m22
m33
m13
D
D
D
D
1
1
1
0
1
1
1
1
RSVD
RSVD
D
D
D
D
1
0
1
0
0
0
0
0