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STV8226 数据表(PDF) 50 Page - STMicroelectronics

部件名 STV8226
功能描述  Multistandard TV Audio Processor and Digital Sound Demodulator
Download  97 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV8226 数据表(HTML) 50 Page - STMicroelectronics

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Register List
STV82x6
50/97
IAGCC
Channel 2 Internal AGC Time Constant for QPSK
IAGCS
Channel 2 Internal AGC Status for QPSK
CARFQ2H, CARFQ2M, CARFQ2LChannel 2 Carrier DCO Frequency
Address (hex): 26h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IAGC_OFF
0
0
0
0
IAGC_CST[2:0]
Bit Name
Reset
Function
IAGC_OFF
0
AGC Disable
0: Internal AGC is active
1: Internal AGC is disabled
Bits[6:3]
0000
Reserved.
IAGC_CST[2:0]
011
Internal AGC Programmable Step Constant.
These bits control the time per step (values given for QPSK mode). The default value defines the
optimum trade-off between fast settling time (for the fastest NICAM identification) and the noise
immunity (minimum BER degradation)
Step time (us) Time Response (ms)
000
703
128
001
352
64
010
176
32
011
88
16
100
44
8
101
22
4
110
11
2
111
5.5
0.82
Address (hex): 27h
Type: R
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IAGC_CTRL[7:0]
Bit Name
Reset
Function
IAGC_CTRL[7:0]
00000000
Indicates the value of the internal AGC gain control
Address (hex): 28H to 2Ah
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CARFQ2[23:16], CARFQ2[15.8], CARFQ2[7:0]


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