RIVA128ZX Datasheet, PDF (33/85 Pages) STMicroelectronics – 128-BIT 3D MULTIMEDIA ACCELERATOR

128-BIT 3D MULTIMEDIA ACCELERATOR
Figure 30. 4 MByte SGRAM configurations using 16Mbit devices
a. RIVA 128 layout compatible
RIVA128ZX
FBDQM[0]#
FBDQM[1]#
FBDQM[2]#
FBDQM[3]#
FBCS[0]#
FBCLK0
FBD[127:0]
Bank 0
512K×32
SGRAM
FBD[31:0]
FBDQM[4]#
FBDQM[5]#
FBDQM[6]#
FBDQM[7]#
FBCS[0]#
FBCLK1
Bank 1
512K×32
SGRAM
FBD[63:32]
b. Compatible with RIVA128ZX layout
implementing SO-DIMM upgrade to 8Mbytes
FBDQM[0]#
FBDQM[1]#
FBDQM[2]#
FBDQM[3]#
FBCS[0]#
FBCLK0
FBD[127:0]
Bank 0
512K×32
SGRAM
FBD[31:0]
FBDQM[8]#
FBDQM[9]#
FBDQM[10]#
FBDQM[11]#
FBCS[1]#
FBCLK0
Bank 2
512K×32
SGRAM
FBD[95:64]
NOTE
1 The 64-bit bus data paths populated by RIVA128ZX are determined by the BIOS during its boot memory detection se-
quence.
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