STG3000X-RIVA128 STMicroelectronics, STG3000X-RIVA128 Datasheet - Page 53

• Manufacturer Part Number: STG3000X-RIVA128
• Description: 128-BIT 3D MULTIMEDIA ACCELERATOR
• Manufacturer: STMicroelectronics

128-BIT 3D MULTIMEDIA ACCELERATOR
11.4 SERIAL INTERFACE
The RIVA 128 serial interface supports connection
to DDC1/2B, DDC2AB and DDC2B+ compliant
monitors and to serial interface controlled video
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 RIVA 128 requires operation
under software control to provide emulation of the
interface standard. RIVA 128 can act as a master
for communication with slave devices like those
mentioned above. It also acts as a master when in-
terfacing to a DDC1/2 compatible monitor. Al-
though it is not Access.bus compatible, it can com-
municate with a DDC2AB compatible monitor via
the DDC2B+ protocol. (No other Access.bus pe-
ripherals can be attached although other serial de-
vices may co-reside on the DDC bus). The RIVA
128 can clock stretch incoming messages in the
event that the software handler is interrupted by
another task.
RIVA 128
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