Philips Semiconductors
Product specification
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Physical memory
handbook, full pagewidth
(4 kbyte pages)
00000H
32
DMA ADDRESS
10
12
00007H
PAGE TABLE
BASE ADDRESS
(00006H)
'0'
Page table
20 10
2
20
000H
00001000H
00008000H
00009000H
0000A000H
0000D000H
00011000H
00014000H
00016000H
0001E000H
0000FH
00017 H
0001FH
PAGE TABLE
ENTRY ADDRESS
007H
PAGE
ADDRESS
20
12
ME
(Mapping Enable)
015H
PHYSICAL PCI ADDRESS
32
MGG261
= allocated memory space
= page table
Fig.6 Memory Management Unit (MMU).
29
1998 Apr 09