am79q02 ETC-unknow, am79q02 Datasheet - Page 50

• Manufacturer Part Number: am79q02
• Description: Quad Subscriber Line Audio-processing Circuit Qslac Devices
• Manufacturer: ETC-unknow

39, 40. Write/Read X Filter Coefficients
50
(88/89h)
R/W = 0: Write
R/W = 1: Read
The Z-transform equation for the X filter is defined as:
Sample rate = 16 kHz
For i = 0 to 5, the coefficients for the X filter are defined as:
Power Up and Hardware Reset (
See note under Commands 31 and 32.
Command
I/O Input Data Byte 1
I/O Input Data Byte 2
I/O Input Data Byte 3
I/O Input Data Byte 4
I/O Input Data Byte 5
I/O Input Data Byte 6
I/O Input Data Byte 7
I/O Input Data Byte 8
I/O Input Data Byte 9
I/O Input Data Byte 10
I/O Input Data Byte 11
I/O Input Data Byte 12
(H
H
Xi
x
x
z ( )
=
(z) = 1)
C1i 2
=
x
•
0
Am79Q02/021/031 Data Sheet
+
–
x
m1i
1
z
1 –
{
1
+
+
x
C2i 2
C40
C20
C41
C21
C42
C22
C43
C23
C44
C24
C45
C25
2
D
RST
z
1
2 –
7
•
+
) Values = 0111 0190 0190 0190 0190 0190 (Hex)
x
–
m2i
3
z
D
3 –
0
[
6
1
+
+
x
C3i 2
4
z
m40
m20
m41
m21
m42
m22
m43
m23
m44
m24
m45
m25
4 –
D
0
5
•
+
x
–
5
m3i
z
5 –
D
(
0
1
4
+
C4i 2
C30
C10
C31
C11
C32
C12
C33
C13
C34
C14
C35
C15
D
•
1
3
–
m4i
)
]
D
0
}
2
MPI Command
m30
m10
m31
m11
m32
m12
m33
m13
m34
m14
m35
m15
D
0
1
R/W
D
0