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SAA7185B

Digital Video Encoders (DENC2-M6)

Philips Electronics 

Philips Semiconductors

Digital Video Encoders (DENC2-M6)

Preliminary specification

SAA7184; SAA7185B

Table 18 Subaddress 67 to 6A

DATA BYTE(1)

DESCRIPTION

L21O0

L21O1

L21E0

L21E1

first byte of captioning data, odd field

second byte of captioning data, odd field

first byte of extended data, even field

second byte of extended data, even field

Note

1. LSBs of the respective bytes are encoded immediately after run-in and framing code, the MSBs of the respective

bytes have to carry the parity bit, in accordance with the definition of line 21 encoding format.

Table 19 Subaddress 6B

DATA BYTE

SCCLN

MODIN

PCREF

DESCRIPTION

selects the actual line, where closed caption or extended data is encoded; see note 1

defines video data of MP port or VP (DP) port to be encoded; see Table 20

0 = normal polarity of CREF for DIG TV2 compatible input signals; 1 = inverted

Note

1. Line = (SCCLN + 4) for M systems; line = (SCCLN + 1) for other systems.

Table 20 Logic levels and function of MODIN

DATA BYTE

MODIN1

0

0

1

1

MODIN0

0

1

0

1

FUNCTION

unconditionally from MP port

from MP port, if pin SEL_ED = HIGH; otherwise from VP port

unconditionally from VP port

from VP port, if pin SEL_ED = HIGH; otherwise from MP port

1996 Jul 03

18

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