RIVA128 datasheet(29/77 Pages) STMICROELECTRONICS

Part #	RIVA128

Description	RIVA 128™ 128-BIT 3D MULTIMEDIA ACCELERATOR

PDF	77 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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29 / 77 page

128-BIT 3D MULTIMEDIA ACCELERATOR

RIVA 128

29/77

Figure 23.

2 and 4MByte SGRAM configurations

NOTE

RIVA 128 has a pin reserved for an eleventh address signal, FBA[10], which may be used in the future with pin compatible

16MBit 256K x 2 x 32 SDRAMs. This signal is a “no-connect” in the initial RIVA 128 but may be activated in a future pin-

compatible upgrade. If there is sufficient routing space it may be prudent to route this signal to pin 30 of the 100 pin PQFP

SGRAM. [FBA10] should be pulled to GND with a 47K

Ω resistor.

FBD[127:0]

FBDQM[0]#

FBDQM[1]#

FBD[31:0]

FBD[63:32]

FBDQM[2]#

FBDQM[3]#

FBDQM[4]#

FBDQM[5]#

FBDQM[6]#

FBDQM[7]#

FBDQM[8]#

FBDQM[9]#

FBDQM[10]#

FBDQM[11]#

FBDQM[12]#

FBDQM[13]#

FBDQM[14]#

FBDQM[15]#

FBD[95:64]

FBD[127:96]

FBCS[0]#

FBCLK1

FBCS[0]#

FBCLK0

FBCS[1]#

FBCLK1

FBCS[1]#

FBCLK0

Expansion to 4MBytes

RIVA128 Datasheet(PDF) 29 Page - STMicroelectronics

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