SAA7151 datasheet(13/49 Pages) PHILIPS

13 / 49 page

April 1993

Philips Semiconductors

Product speciﬁcation

Digital multistandard colour decoder with

SCART interface (DMSD2-SCART)

SAA7151B

Signal levels (Figures 12, 13 and 14)

The nominal input and output signal levels are defined by a colour bar signal with 75 % colour, 100 % saturation and

100 % luminance amplitude (EBU colour bar).

CUV-bus input format

The CUV-bus transfers the digital chrominance/colour-difference signals from the ADC to the SAA7151B (Fig.6; Table 1):

• normal mode for digital chrominance transmission.

• UV colour-difference mode for colour-difference signals UV (out of matrixed RGB signals)

• FS mode (fast switch mode; UV inserted into chrominance signal C with addition of the two signal spectra).

RTCO output

The RTCO output signal (Fig.10) contains serialized information about actual clock frequency, subcarrier frequency and

PAL/SECAM sequence. This signal may preferably be used with the frequency-locked digital video encoder SAA7199B.

Fig.6 Timing example of fast enable input (FEIN).

handbook, full pagewidth

MEH548

HREF

FEIN

YUV

CREF

tSU

tHD

tOH

tOS

from 3-state

to 3-state

LL27

SAA7151 Datasheet(PDF) 13 Page - NXP Semiconductors