STV8247 datasheet(70/156 Pages) STMICROELECTRONICS

tên linh kiện	STV8247

Giải thích chi tiết về linh kiện	Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

PDF	156 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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STV82x7

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Note:

Carrier Freq: CARFQ1(dec).fS / 2

24 with f

S = 24.576 MHz (crystal oscillator frequency

independent)

FIR1C[0:7]

Channel 1 FIR Coefficients

Bit Name

Reset

Function

CARFQ1[23:16]

CARFQ1[15:8]

CARFQ1[7:0]

00111110

10000000

00000000

Channel 1 DCO Carrier Frequency (8 MSBs)

Channel 1 DCO Carrier Frequency

Channel 1 DCO Carrier Frequency (8 LSBs), see Table 10.

Table 10: Mono Carrier Frequencies by System

System

Mono Carrier Freq. (MHz)

CARFQ1[23:0] (dec)

CARFQ1[23:0]

M/N

4.5

3072000

2EE000h

B/G

5.5

3754667

394AABh

6.0

4096000

3E8000h

6.5

4453717

43F555h

D/K/K1/K2

6.5

4437333

43B555h

Address: 15h to 1Ch

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

FIR1C0[7:0] to FIR1C7[7:0]

Table 11: Channel 1 FIR Coefficients

Bitfield

Description

FM 27 kHz1

1. Default mode for M/N standard.

FM 50 kHz2

2. Default mode for B/G/I/D/K standards

FM 75 kHz

FM 100 kHz

FM 200 kHz

FM 350 kHz

FM 500 kHz

FIR1C0[7:0]

FFh

00h

01h

FFh

00h

02h

01h

00h

FIR1C1[7:0]

FEh

03h

00h

01h

00h

FEh

FIR1C2[7:0]

FEh

FCh

02h

05h

01h

FCh

04h

FDh

FIR1C3[7:0]

00h

FDh

FCh

02h

FCh

03h

FAh

FEh

FIR1C4[7:0]

06h

02h

F8h

08h

04h

05h

04h

FIR1C5[7:0]

0Eh

0Dh

01h

F9h

F6h

F2h

00h

0Dh

FIR1C6[7:0]

16h

18h

15h

F8h

06h

F2h

16h

FIR1C7[7:0]

1Bh

1Fh

2Dh

35h

4Ah

43h

4Dh

1Dh

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