VPC3232D datasheet(19/78 Pages) MICRONAS

19 / 78 page

ADVANCE INFORMATION

VPC 323xD, VPC 324xD

Micronas

– Both the length and the number of active video lines

varies with the selected window parameters. For

compliance with the ITU-R656 recommendation, a

size of 720 samples per line must be selected for

each window.

– During blanked video lines SAV/EAV headers are

suppressed in pairs. To assure vertical sync detec-

tion the V-flag in the EAV header of the last active

video line is set to 1. Additionally, during field blank-

ing all SAV/EAV headers (with the V-flag set to 1)

are inserted.

Table 2–6: Coding of the SAV/EAV-header

The bits P0, P1, P2, and P3 are Hamming-coded pro-

tection bits.

Fig. 2–14: Output of video data with embedded reference headers (@27 MHz)

Fig. 2–15: Detailed data output (double-clock on)

Bit No.

Word

MSB

LSB

First

Second

000

Third

Fourth

F = 0 during field 1,

F = 1 during field 2

V = 0 during active lines V = 1 during vertical field blanking

H = 0 in SAV,

H = 1 in EAV

T = 1 (video task only)

1728 samples

constant during

horizontal blanking

Y=10hex; CR=CB=80hex

AVO

Digital

Video

Output

CB Y CR Y ...

dependent on window size

CB Y CR Y ...

SAV: ”start of active video” header

EAV: ”end of active video” header

Y DATA

AVO

LLC1

LLC2

80h

10h

SAV1

SAV2

SAV3

SAV4

CB1

CR1

CBn-1

Yn-1

CRn-1

EAV1

EAV2

EAV3

EAV4

80h

10h

VPC3232D Datenblatt(PDF) 19 Page - Micronas

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