RIVA128ZX datasheet(59/85 Pages) STMICROELECTRONICS

59 / 85 page

128-BIT 3D MULTIMEDIA ACCELERATOR

RIVA128ZX

59/85

11.4 SERIAL INTERFACE

The RIVA128ZX serial interface supports connec-

tion to DDC1/2B, DDC2AB and DDC2B+ compli-

ant monitors and to serial interface controlled vid-

eo decoders and tuners. Supported video decoder

chips include Philips SAA7110, SAA7111A, ITT

3225 and Samsung KS0127. For details of ad-

dress locations and protocols applying to specific

parts refer to the appropriate manufacturer’s

datasheet.

The serial interface in RIVA128ZX requires opera-

tion under software control to provide emulation of

the interface standard. RIVA128ZX can act as a

master for communication with slave devices like

those mentioned above. It also acts as a master

when interfacing to a DDC1/2 compatible monitor.

Although it is not Access.bus compatible, it can

communicate with a DDC2AB compatible monitor

via the DDC2B+ protocol. (No other Access.bus

peripherals can be attached although other serial

devices may co-reside on the DDC bus). The

RIVA128ZX can clock stretch incoming messages

in the event that the software handler is interrupted

by another task.

RIVA128ZX Datasheet(PDF) 59 Page - STMicroelectronics