參數(shù)資料
型號(hào): RIVA128ZX
廠商: 意法半導(dǎo)體
英文描述: 128-BIT 3D MULTIMEDIA ACCELERATOR
中文描述: 128位3D多媒體加速器
文件頁(yè)數(shù): 31/85頁(yè)
文件大小: 609K
代理商: RIVA128ZX
128-BIT 3D MULTIMEDIA ACCELERATOR
RIVA128ZX
31/85
6.1
Two extra address lines are required to support 8MByte SDRAMcompared with those needed for 4MByte
SGRAM on RIVA 128. These are the A10 signal which was defined on the RIVA 128 pinout for future ex-
pansion and the SDRAM’s internal bank select address bit (BA signal). To provide this extra signal the
RIVA128ZX
FBCS[1]#
pin is internally redefined to be the SDRAM BA/A11 signal.
Since the RIVA128ZX supports a maximum addressable memory of 8MBytes, SDRAM support is only al-
lowed with a64-bit data bus. Figure28 shows an example SDRAMmemory configuration for RIVA128ZX.
Note this figure attempts to scramble the bytes and data bits within bytes to simplify board layout, but this
will depend on how the board components are placed in the layout.
SDRAM INTERFACE
Figure 28.
8MByte SDRAM configuration using 16Mbit devices
FBD[127:0]
FBD[7:0]
FBDQM[3]#
FBDQM[0]#
FBDQM[5]#
FBDQM[6]#
FBDQM[1]#
FBDQM[2]#
FBDQM[4]#
FBDQM[7]#
FBCS[0]#
FBCLK1
FBCS[0]#
FBCLK0
FBCS[0]#
FBCLK1
FBCS[0]#
FBCLK0
F
F
F
F
F
1M
×
16
SDRAM
F
B
A
R
C
W
C
DQML
DQMH
CS
CLK
1M
×
16
SDRAM
B
A
R
C
W
C
DQML
DQMH
CS
CLK
1M
×
16
SDRAM
B
A
R
C
W
C
DQML
DQMH
CS
CLK
1M
×
16
SDRAM
B
A
R
C
W
C
DQML
DQMH
CS
CLK
F
F
F
F
F
F
FBD[31:24]
FBD[23:16]
FBD[15:8]
FBD[55:48]
FBD[47:40]
FBD[56:63]
FBD[32:39]
相關(guān)PDF資料
PDF描述
RIVA128 RIVA 128⑩ 128-BIT 3D MULTIMEDIA ACCELERATOR
RIX-0142-H FILTER IEC EINGANG ULTRA KOMPAKT 1A
RIX-0342-H FILTER IEC EINGANG ULTRA KOMPAKT 3A
RIX-0642-H FILTER IEC EINGANG ULTRA KOMPAKT 6A
RJ45SRB-BLACK TUELLE FUER RJ45 STECKER SW Inhalt pro Packung: 8 Stk.
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