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參數(shù)資料
| 型號(hào)： | AM79Q021 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
| 中文描述： | 四用戶線路音頻處理電路（QSLAC）設(shè)備 |
| 文件頁數(shù)： | 54/68頁 |
| 文件大?。?/td> | 1361K |
| 代理商： | AM79Q021 |
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54
Am79Q02/021/031 Data Sheet
50, 51. Write/Read IIR Z Filter Coefficients (IIR only)
(9A/9Bh)
R/W = 0: Write
MPI Command
R/W = 1: Read
This command writes/reads the IIR filter section only, without affecting the FIR.
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 (
RST
) Values = 0190 0190 0190 0190 0190 0190 01 0190 (Hex)
(H
z
(z) = 0)
See note under Commands 31 and 32.
Note:
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 increased by a gain of 1/Z
6
, improving dynamic range and
avoiding truncation limitations through processing within this filter. The IIR filter output is then multiplied
by Z
6
to normalize the overall gain. Z
5
is the actual IIR filter gain value defined by the programmed
coefficients, but it also includes the initial 1/Z
6
gain. The theoretical effective IIR gain, without the Z
6
gain
and normalization, is actually Z
5
/Z
6
.
D
7
1
C45
C25
C26
C47
C27
D
6
0
D
5
0
m45
m25
m26
m47
m27
D
4
1
D
3
1
C35
C15
C16
C37
C17
D
2
0
D
1
1
m35
m15
m16
m37
m17
D
0
R/W
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
H
z
z
( )
z
0
z
1
z
1
–
z
2
z
2
–
z
3
z
3
–
z
4
z
4
–
z
--------------------------------------
z
z
z
1
–
1
z
7
z
1
–
–
+
+
+
+
+
=
z
i
C1i
2
m1i
–
1
C2i
2
m2i
–
1
C3i
2
m3i
–
1
C4i
2
m4i
–
+
(
)
+
[
]
+
{
}
=
z
6
C16
2
m16
–
1
C26
2
m26
–
+
{
}
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79Q021JC | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
| AM79Q021VC | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
| AM79Q02JC | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
| AM79Q031 | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
| AM79Q031JC | Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79Q021JC | 制造商:Advanced Micro Devices 功能描述: 制造商:Advanced Micro Devices 功能描述:PCM CODEC, Quad, 44 Pin, Plastic, PLCC 制造商:Analog Devices 功能描述:PCM CODEC, Quad, 44 Pin, Plastic, PLCC |
| AM79Q021JC/T | 制造商:Advanced Micro Devices 功能描述: |
| AM79Q021VC | 制造商:Advanced Micro Devices 功能描述: |
| AM79Q02JC | 制造商:Advanced Micro Devices 功能描述: |
| AM79Q031 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices |
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