LE58QL021BVC Zarlink, LE58QL021BVC Datasheet - Page 53

• Manufacturer Part Number: LE58QL021BVC
• Description: QUAD, SLAC, PROG CODEC, 3.3V, 20 I/0, PQT44, LEAD FREE
• Manufacturer: Zarlink

96/97h Write/Read B2 Filter Coefficients (IIR)
This function is described in Write/Read B1 Filter Coefficients (FIR) on
Power Up and Hardware Reset (RST) Values = 0190 (Hex) (B
See note under Command 80/81h on
98/99h Write/Read FIR Z Filter Coefficients (FIR only)
Cxy = 0 or 1 in the command above corresponds to Cxy = +1 or −1, respectively, in the equation below.
The Z-transform equation for the Z filter is defined as:
For i = 0 to 5 and 7
Power Up and Hardware Reset (RST) Values = 0190 0190 0190 0190 0190 0190 01 0190 (Hex)
See note under Command 80/81h on
Note:
Z
increased by a gain of 1/Z
6
is used for IIR filter scaling only. Its value is typically greater than zero but less than or equal to one. The input to the IIR filter section is first
Command
I/O Data Byte 1
I/O Data Byte 2
Command
I/O Data Byte 1
I/O Data Byte 2
I/O Data Byte 3
I/O Data Byte 4
I/O Data Byte 5
I/O Data Byte 6
I/O Data Byte 7
I/O Data Byte 8
I/O Data Byte 9
I/O Data Byte 10
R/W = 0: Write
R/W = 1: Read
R/W = 0: Write
R/W = 1: Read
This command writes and reads only the FIR filter section without affecting the IIR.
6
, improving dynamic range and avoiding truncation limitations through processing within this filter. The IIR filter output
H
Sample rate = 32 kHz
(H
z
z
z
z
z ( )
6
i
(z) = 0)
=
=
=
C1i 2
C16 2
z
page
page
0
+
•
•
z
–
1
48.
48.
m1i
–
•
m16
C411
C211
C40
C20
C41
C21
C42
C22
C43
C23
C44
C24
z
D
D
1
1
{
–
7
7
1
1
{
+
1
+
Zarlink Semiconductor Inc.
z
+
C2i 2
2
C26 2
•
D
D
0
0
z
•
6
6
–
2
•
–
+
m2i
–
z
11
53
m26
3
m411
m211
[
m40
m20
m41
m21
m42
m22
m43
m23
m44
m24
•
1
= 0)
D
D
0
0
z
5
5
+
}
–
C3i 2
3
+
page
z
•
4
D
D
1
1
•
4
4
–
z
m3i
50.
–
4
(
+
1
z
------------------------------------------ -
C311
C111
C30
C10
C31
C11
C32
C12
C33
C13
C34
C14
+
5
D
D
0
1
C4i 2
1 z
3
3
•
–
z
6
•
•
7
z
•
–
7
D
D
m4i
z
1
0
•
2
2
–
1
z
)
–
]
1
}
m311
m111
m30
m10
m31
m11
m32
m12
m33
m13
m34
m14
D
D
1
0
1
1
R/W
R/W
D
D
0
0