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參數(shù)資料
| 型號(hào)： | AM79Q062JC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 編解碼器 |
| 英文描述： | A/MU-LAW, PCM CODEC, PQCC32 |
| 封裝： | PLASTIC, LCC-32 |
| 文件頁(yè)數(shù)： | 79/95頁(yè) |
| 文件大小： | 1399K |
| 代理商： | AM79Q062JC |
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80
Am79Q06/061/062/063 Data Sheet
Details of COP, CSD Data Commands
This section describes in detail each of the monitor channel COP commands. Each of the commands is shown along
with the format of any additional data bytes that follow. For details of the filter coefficients of the form Cxymxy, please
refer to the Description of Coefficients section.
COP 1.Write/Read AISN Coefficients and Analog Gains
GCI Command
(50/51h)
R/W = 0: Write
R/W = 1: Read
RSVD:
Reserved for future use. Reset to 0. Always write as 0, but 0 is not guaranteed when
read.
Transmit analog gain
AX = 0*:
0 dB gain
AX = 1:
6.02 dB gain
Receive Analog Loss
AR = 0*:
0 dB loss
AR = 1:
6.02 dB loss
AISN coefficient
AISN = 0*–31 See below (Default value = 0)
The Analog Impedance Scaling Network (AISN) gain can be varied from –0.9375 to 0.9375 in
multiples of 0.0625. The gain coefficient is decoded using the following equation:
hAISN = 0.0625 ((AISN4 2
4 + AISN3
23 + AISN2 22 + AISN1 21 + AISN0 20) – 16)
where hAISN is the gain of the AISN.
A value of AISN = '10000' turns on the Full Digital Loopback mode.
* Power Up and Hardware Reset (RST) Value = 00h
COP 2.Write/Read GX Filter Coefficients
GCI 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) Value = A9F0h, (HGX = 1.995, or +6 dB)
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
0
W/R
Data
RSVD
AX
AR
AISN4
ASIN3
AISN2
AISN1
AISN0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Command
1
0
W/R
Coefficient Byte 1
C40
m40
C30
m30
Coefficient Byte 2
C20
m20
C10
m10
H
GX
1C10
2
m10
–
1C20
2
m20
–
1C30
2
m30
–
1C40
2
m40
–
+
()
+
()
+
()
()
+
()
=
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