參數(shù)資料
型號: AM79Q021VC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 編解碼器
英文描述: PCM CODEC, PQFP44
封裝: TQFP-44
文件頁數(shù): 42/64頁
文件大?。?/td> 911K
代理商: AM79Q021VC
SLAC Products
47
30. Read Revision Code Number (RCN)
MPI Command
(73h)
This command returns an 8-bit number (RCN) describing the revision number of the QSLAC
device. This command does not depend on the state of the Channel Enable Register.
31, 32. Write/Read GX Filter Coefficients
MPI Command
(80/81h)
R/W = 0: Write
R/W = 1: Read
The coefficient for the GX filter is defined as:
)
Power Up and Hardware Reset (RST) Values = A9F0 (Hex) (HGX = 1.995 (6 dB)).
Note: The default value is contained in a ROM register separate from the programmable coefficient
RAM. There is a filter enable bit in Operating Functions Register to switch between the default and pro-
grammed values.
33, 34. Write/Read GR Filter Coefficients
MPI Command
(82/83h)
R/W = 0: Write
R/W = 1: Read
The coefficient for the GR filter is defined as:
Power Up and Hardware Reset (RST) Values = 23A1 (Hex) (HGR = 0.35547 (–8.984 dB)).
See note under Commands 31 and 32.
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
I/O Data
RCN7
RCN6
RCN5
RCN4
RCN3
RCN2
RCN1
RCN0
D7
D6
D5
D4
D3
D2
D1
D0
Command
1
0
R/W
I/O Data Byte 1
C40
m40
C30
m30
I/O Data Byte 2
C20
m20
C10
m10
D7
D6
D5
D4
D3
D2
D1
D0
Command:
1
0
1
R/W
I/O Data Byte 1
C40
m40
C30
m30
I/O Data Byte 2
C20
m20
C10
m10
H
GX
1C10
(
2
m10
1C20
2
m20
1C30
2
m30
1C40
2
m40
+
()
+
[]
+
{}
+
=
H
GR
C10
2
m10
1C20
2
m20
1C30
2
m30
1C40
2
m40
+
()
+
[]
+
{}
=
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