LE58QL061BVC Zarlink, LE58QL061BVC Datasheet - Page 54

• Manufacturer Part Number: LE58QL061BVC
• Description: QUAD, SLAC, PROG CODEC, 3.3V, GCI, 20 I/0, PQT44, LEAD FREE
• Manufacturer: Zarlink

See note under Command 80/81h on
Note:
Z
increased by a gain of 1/Z
is then multiplied by Z
cludes the initial 1/Z
86/87h Write/Read B1 Filter Coefficients
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 B filter is defined as:
The coefficients for the FIR B section and the gain of the IIR B section are defined as:
For i = 2 to 10,
The feedback coefficient of the IIR B section is defined as
Refer to Command 96/97h for programming of the B
Power Up and Hardware Reset (RST) Values = 09 00 90 09 00 90 09 00 90 09 00 90 09 00 (Hex)
See note under Command 80/81h on
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 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
I/O Input Data Byte 13
I/O Input Data Byte 14
MPI Command
R/W = 0: Write
R/W = 1: Read
6
gain. The theoretical effective IIR gain, without the Z
6
(H
to normalize the overall gain. Z
6
z
(z) = 0)
, improving dynamic range and avoiding truncation limitations through processing within this filter. The IIR filter output
B
11
page
page
B
H
i
=
Sample rate = 16 kHz
=
B
C111 2
z ( )
52.
52.
C1i 2
C310
C110
C32
C12
C23
C34
C14
C25
C36
C16
C27
C38
C18
C29
D
=
1
7
•
5
•
B
is the actual IIR filter gain value defined by the programmed coefficients, but it also in-
2
–
–
Zarlink Semiconductor Inc.
•
mli
11
m111
z
[
–
coefficients.
D
1
2
0
6
+
{
+
1
…
C2i 2
+
H
+
54
C211 2
B
m310
m110
•
B
m32
m12
m23
m34
m14
m25
m36
m16
m27
m38
m18
m29
(
D
z )
0
9
6
5
–
•
gain and normalization, is actually Z
m2i
=
•
z
–
0
(
9
–
1
m211
+
+
D
--------------------------------
1 B
0
4
C3i 2
B
–
[
10
1
11
•
•
+
z
RSVD
C311 2
C210
•
C22
C33
C13
C24
C35
C15
C26
C37
C17
C28
C39
C19
–
–
D
10
z
m3i
0
3
–
1
)
]
•
–
m311
D
1
2
(
1
+
5
RSVD
m210
/Z
m22
m33
m13
m24
m35
m15
m26
m37
m17
m28
m39
m19
C411 2
D
1
6
1
.
•
R/W
–
D
m411
0
)
]
}