SAB9077 datasheet(18/32 Pages) PHILIPS

18 / 32 page

1996 Aug 07

Philips Semiconductors

Preliminary speciﬁcation

Picture-In-Picture (PIP) controller

SAB9077H

Table 5

Colour types and brightness levels

COLOUR TYPE

BRIGHTNESS LEVEL

COLOUR

VALUE

Black

10%

30%

50%

Blue

30%

50%

70%

100%

Red

30%

50%

70%

100%

Magenta

30%

50%

70%

100%

Green

30%

50%

70%

100%

Cyan

30%

50%

70%

100%

Yellow

30%

50%

70%

100%

White

60%

70%

80%

100%

Table 5 indicates how I2C-bus register settings control the

colour and brightness. All colour registers are similar, they

contain one on/off bit, two brightness bits and three colour

type bits. To determine which colour is visible in the event

two or more colours being displayed on the same position,

the next priority scheme is followed:

1. Sub-select colour (SBS)

2. Sub-border colour (SB)

3. Main-select colour (MBS)

4. Main-border colour (MB)

5. Background colour (BG).

SA 15H AND SA 16H DECODER REGISTERS

The MVFILT and SVFILT bits can set the type of vertical

filtering. The MUVPOL and SUVPOL bits invert the UV

polarity of the incoming signals. The MVSPOL and

SVSPOL bits determine the active edge of the Vsync (see

Fig.7). The MHSYNC and SHSYNC bits determine the

timing of the Hsync pulse (burstkey or Hsync timing).

The MFPOL and SFPOL bits can invert the field

identification (ID) of the incoming fields (see Fig.7).

SA 17H DISPLAY SETTINGS REGISTER

The FBDEL bits can adjust the fast blank delay in 8 steps

of 1

⁄2 a clock cycle (−8 to +7). 0H is mid-scale.

The DUVPOL bit inverts the UV polarity of the border

colours.

The DVSPOL bit determines the active edge of the Vsync

(see Fig.7). The DHSYNC bit determines the timing of the

Hsync pulse (burstkey or Hsync). The DFPOL bit can invert

the field ID of the incoming fields (see Fig.7).

SA 18H PEDESTAL SETTINGS REGISTER

The PEDESTU and PEDESTV bits give the U and V DAC

outputs an offset of

−8 to +7 LSB when the FBL is

switched off. This can be used to adjust the White point of

the system.

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