1995 Nov 03

9

Philips Semiconductors

Preliminary specification

YUV-to-RGB Digital-to-Analog

Converter (DAC)

SAA7167

Table 8

Bit functions in data byte; notes 1 and 2

Notes

DC CHARACTERISTICS

BIT

DESCRIPTION

FMTC1 and FMTC0

video format control:

00; YUV 4 :2:2

01; YUV 4 :1:1

10; YUV 2:1:1/CCIR 656

11; RGB 5 :6:5

KINV

key polarity:

KINV = 0: EXTKEY = HIGH for analog mixer to select DAC outputs

KINV = 1: EXTKEY = HIGH for analog mixer to select analog RGB inputs

KEN

key enable:

0 = disable

1 = enable

DRP

UV input data code: 0 = two’s complement; 1 = binary offset

KMOD2 to KMOD0

keying mode:

000; external key

100; 8-bit pixel colour key

101; 2

× 8-bit pixel colour key (with two-edge clock latching for pixel input)

110; 2

× 8-bit pixel colour key (with one-edge clock latching for pixel input)

111; 3

× 8-bit pixel colour key (with one-edge clock latching for pixel input)

all other combinations are reserved

KDLY2 to KDLY0

added keying delay cycles (from 0 to 7 PCLK)

KD7 to KD0

the data value compared for 8, 16 or 24-bit pixel colour key

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

digital supply voltage

4.75

5.0

5.25

V

analog supply voltage

4.75

5.0

5.25

V

−

100

−

mA

HIGH level input voltage (pin SDA)

3

−

V

LOW level input voltage (pin SDA)

−0.5

−

+1.5

V

HIGH level digital input voltage

2

−−

V

LOW level digital input voltage

−−

0.8

V

full-scale analog RGB inputs

−

0.7

−

V

full scale analog RGB outputs (for 150

Ω load)

−

1.4

−

V

DNL

differential non-linearity error of video output

−−

1

LSB

INL

integral non-linearity error of video output

−−

1

LSB