SAA7184 データシートの表示（PDF） - Philips Electronics

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SAA7184

Digital Video Encoders (DENC2-M6)

Philips Electronics 

Philips Semiconductors

Digital Video Encoders (DENC2-M6)

Preliminary specification

SAA7184; SAA7185B

Table 16 Subaddress 62

DATA BYTE

BSTA

DECTYP

DESCRIPTION

CONDITIONS

amplitude of colour burst;

input representation in

accordance with CCIR 601

white-to-black = 92.5 IRE;

burst = 40 IRE; NTSC encoding

BSTA = 0 to 1.25 × nominal(1)

white-to-black = 92.5 IRE;

burst = 40 IRE; PAL encoding

BSTA = 0 to 1.76 × nominal(2)

white-to-black = 100 IRE;

burst = 43 IRE; NTSC encoding

BSTA = 0 to 1.20 × nominal(3)

white-to-black = 100 IRE;

burst = 43 IRE; PAL encoding

BSTA = 0 to 1.67 × nominal(4)

real time control input (RTCI)

logic 0

logic 1

Notes

1. Recommended value: BSTA = 102 (66H).

2. Recommended value: BSTA = 72 (48H).

3. Recommended value: BSTA = 106 (6AH).

4. Recommended value: BSTA = 75 (4BH).

REMARKS

control from SAA7151B digital

colour decoder

control from SAA7111 video

input processor (VIP)

Table 17 Subaddress 63 to 66 (four bytes to program subcarrier frequency)

DATA BYTE

DESCRIPTION

CONDITIONS

FSC0 to FSC3

ffsc = subcarrier frequency

(in multiples of line

frequency);

fllc = clock frequency (in

multiples of line frequency)

FSC

=



round



f-f-f-l-sl--c-c

×

232







see note 1

REMARKS

FSC3 = most significant byte

FSC0 = least significant byte

Note

1. Examples:

a) NTSC-M: ffsc = 227.5, fllc = 1716 → FSC = 569408543 (21F07C1FH).

b) PAL-B/G: ffsc = 283.7516, fllc = 1728 → FSC = 705268427 (2A098ACBH).

1996 Jul 03

17

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