参数资料
型号: L64781
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: PLASTIC, QFP-100
文件页数: 4/164页
文件大小: 2003K
代理商: L64781
Demod Parameters Registers
5-31
AGC_GAIN
AGC Loop Gain
D[2:0] R/W
These registers determine the AGC gain of the loop lter.
This value is set according to the sensitivity of the AGC
loop.
The initial value of AGC_GAIN is 100.
5.5.5 Demod Parameters Register 7 (0x0D)
This is an 8-bit wide, read/write register.
ADC_FORMAT
ADC Output Format
D7 R/W
ADC outputs values either in two’s complement or in
binary offset. This bit selects the values.
The initial value of ADC_FORMAT is 0.
R2C_SI
COFDM Spectrum Inversion
D6 R/W
During the up-conversion and the following down-
conversion, the COFDM spectrum may be inverted,
AGC_GAIN[2:0]
Denition
00
0
00
1
01
0
01
1
10
0
10
1
11
0
11
1
K
s
3.9
10
3
×
K
s
9.8
10
4
×
K
s
2.4
10
4
×
K
s
6.1
10
5
×
K
s
1.5
10
5
×
K
s
3.8
10
6
×
K
s
9.5
10
7
×
K
s
2.4
10
7
×
D7
D6
D5
D0
ADC_FORMAT
R2C_SI
AGC_TARGET_MSB
ADC_FORMAT
Denition
0
Binary Offset
1
Two’s Complement
l64781.book Page 31 Friday, January 19, 2001 1:28 PM
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