AM79Q02JC AMD (ADVANCED MICRO DEVICES), AM79Q02JC Datasheet - Page 54

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AM79Q02JC

Manufacturer Part Number
AM79Q02JC
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet

Specifications of AM79Q02JC

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50, 51. Write/Read IIR Z Filter Coefficients (IIR only)
54
(9A/9Bh)
R/W = 0: Write
R/W = 1: Read
This command writes/reads the IIR filter section only, without affecting the FIR.
avoiding truncation limitations through processing within this filter. The IIR filter output is then multiplied
by Z
coefficients, but it also includes the initial 1/Z
and normalization, is actually Z
The Z-transform equation for the Z filter is defined as:
Sample rate = 32 kHz
For i = 0 to 5 and 7
Power Up and Hardware Reset (
See note under Commands 31 and 32.
Note: Z
one. The input to the IIR filter section is first increased by a gain of 1/Z
avoiding truncation limitations through processing within this filter. The IIR filter output is then multiplied
by Z
coefficients, but it also includes the initial 1/Z
and normalization, is actually Z
Command
I/O Data Byte 11
I/O Data Byte 12
I/O Data Byte 13
I/O Data Byte 14
I/O Data Byte 15
6
6
to normalize the overall gain. Z
to normalize the overall gain. Z
6
is used for IIR filter scaling only. Its value is typically greater than zero but less than or equal to
(H
H
z
z
i
6
z
z
=
=
(z) = 0)
z
C1i 2
C16 2
=
z
0
Am79Q02/021/031 Data Sheet
+
z
m1i
1
m16
z
1
5
5
1
/Z
1
/Z
+
+
+
6
6
C2i 2
C45
C25
C26
C47
C27
.
.
C26 2
RST
z
D
1
5
2
5
7
is the actual IIR filter gain value defined by the programmed
is the actual IIR filter gain value defined by the programmed
) Values = 0190 0190 0190 0190 0190 0190 01 0190 (Hex)
z
2 –
m2i
+
6
6
m26
D
0
gain. The theoretical effective IIR gain, without the Z
z
gain. The theoretical effective IIR gain, without the Z
6
3
1
+
z
C3i 2
3
m45
m25
m26
m47
m27
D
+
0
5
z
4
m3i
z
4 –
D
1
1
+
4
+
z
-------------------------------------- -
5
C4i 2
1 z
6
z
, improving dynamic range and
C35
C15
C16
C37
C17
D
6
1
3
7
z
m4i
7
z
1 –
z
D
0
1
2
MPI Command
m35
m15
m16
m37
m17
D
1
1
6
6
R/W
D
gain
gain
0

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