STV8247 Datasheet, PDF (68/149 Pages) STMicroelectronics – Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

Register List
STV82x7
FIR2C[0:7]
Channel 2 FIR Coefficients
Address: 2Bh to 32h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
FIR2C0[7:0] to FIR2C7[7:0]
Bit 2
Bit 1
Bit 0
Bitfield
FIR2C0[7:0]
FIR2C1[7:0]
FIR2C2[7:0]
FIR2C3[7:0]
FIR2C4[7:0]
FIR2C5[7:0]
FIR2C6[7:0]
FIR2C7[7:0]
Table 14: Channel 2 FIR Coefficients
Description
FM 27 kHz
FFh
FEh
FEh
00h
06h
0Eh
16h
1Bh
FM 50 kHz
00h
FEh
FCh
FDh
02h
0Dh
18h
1Fh
QPSK 40%
00h
00h
FFh
03h
00h
F4h
0Ah
3Dh
(reset state)
QPSK100%
00h
00h
00h
00h
FFh
04h
14h
25h
ACOEFF2
Channel 2 Baseband PLL Loop Filter Proportional
Coefficient
Address: 33h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
ACOEFF2[7:0]
Bit 2
Bit 1
Bit 0
Bit Name
ACOEFF2[7:0]
Reset
Function
10010000 This value defines the loop clamping factor used to program the Proportional Coefficient of the
baseband PLL loop filter (Channel 2). See Table 15 and Table 16.
BCOEFF2
Channel 2 Baseband PLL Loop Filter Integral
Coefficient & DCO Gain
Address: 34h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
BCOEFF2[7:0]
Bit 2
Bit 1
Bit 0
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