stv8226t STMicroelectronics, stv8226t Datasheet - Page 48

• Manufacturer Part Number: stv8226t
• Description: Multistandard Tv Audio Processor And Digital Sound Demodulator
• Manufacturer: STMicroelectronics

Register List
48/97
Address (hex): 1Fh
Type: R
Address (hex): 20h
Type: R/W
Address (hex): 21h
Type: R/W
CETH1[7:0]
Bit Name
Bit Name
CRF1[7:0]
Bit 7
Bit 7
Bit 7
CRF1
CETH1
SQTH1
Bit 6
Bit 6
Bit 6
00000000
00100000
Reset
Reset
Channel 1 Carrier Recovery Frequency
Displays the instantaneous frequency offset of the Channel 1 Baseband PLL Demodulator.
This register is used to compare the carrier level in the channel and the threshold value. This
level is measured after the channel filter and is relative to the full scale reference level (0 dB).
This is used as part of the validation of an FM signal, if the carrier level is below the threshold,
the signal is considered to be non-valid.
CETH
FFh
80h
40h
20h
Bit 5
Bit 5
Bit 5
Channel 1 Baseband PLL Demodulator Offset
Channel 1 FM/AM Carrier Level Threshold
Channel 1 FM Squelch Threshold Register
Threshold (dB)
-6
-12
-18
-24 (Default)
Bit 4
Bit 4
Bit 4
SQTH1[7:0]
CETH1[7:0]
CRF1[7:0]
CETH
10h
08h
00h
Bit 3
Bit 3
Bit 3
Function
Function
Threshold (dB)
-32 (Recommended Value)
-38
OFF (all carrier levels are accepted)
Bit 2
Bit 2
Bit 2
Bit 1
Bit 1
Bit 1
STV82x6
Bit 0
Bit 0
Bit 0