STV82X6 STMICROELECTRONICS [STMicroelectronics], STV82X6 Datasheet - Page 48

• Manufacturer Part Number: STV82X6
• Description: Multistandard TV Audio Processor and Digital Sound Demodulator
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Register List
48/95
Address (hex): 26h
Type: R/W
Address (hex): 27h
Type: R
Address (hex): 28H to 2Ah
Type: R/W
IAGC_CTRL[7:0]
IAGC_OFF
IAGC_CST[2:0]
IAGC_OFF
Bit Name
Bit Name
Bit 7
Bit 7
Bit 7
Bits[6:3]
IAGCC
IAGCS
CARFQ2H, CARFQ2M, CARFQ2LChannel 2 Carrier DCO Frequency
Bit 6
Bit 6
Bit 6
Reset
0
00000000 Indicates the value of the internal AGC gain control
0000
011
Reset
0
AGC Disable
0: Internal AGC is active
1: Internal AGC is disabled
Reserved.
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)
000
001
010
011
100
101
110
111
Bit 5
Bit 5
Bit 5
0
CARFQ2[23:16], CARFQ2[15.8], CARFQ2[7:0]
Channel 2 Internal AGC Time Constant for QPSK
Channel 2 Internal AGC Status for QPSK
Step time (us) Time Response (ms)
703
352
176
88
44
22
11
5.5
Bit 4
Bit 4
Bit 4
0
IAGC_CTRL[7:0]
128
64
32
16
8
4
2
0.82
Bit 3
Bit 3
Bit 3
0
Function
Function
Bit 2
Bit 2
Bit 2
IAGC_CST[2:0]
Bit 1
Bit 1
Bit 1
STV82x6
Bit 0
Bit 0
Bit 0