NEC Network Controller uPD98502 - Manual (Page 116)

CHAPTER 2 V R 4120A
116 Preliminary User’s Manual S15543EJ1V0UM
2.4.3 Physical address space
So V R 4120A core uses a 32-bit address, that the processor physical address space encompasses 4 Gbytes. The
V
R
4120A uses this 4-Gbyte physical address space as shown in Figure 2-31.
Figure 2-31.
µµµµPD98502 Physical Address Space
P C I C ontroller
(F or P C I W indow )
R F U
S D R A M
1000_0000H
S ystem C ontroller
U S B C ontroller
E thernet Controller #1
R F U
R F U
B oot R O M /F lash
M irror of
0000_0000H - 1F F F _F F F F
0F F F _F F FF H
1000_1000H
1000_0F FF H
1000_2000H
1000_1F FF H
1000_3000H
1000_2F FF H
2000_0000H
1F F F _F F FF H
F F F F _F F FF H
1F 00_0000H
1E F F _F F FF H
1002_0000H
1000_F F FF H
A T M C ell Processor
1001_0000H
1001_F F FF H
0000_0000H
4 K B
4 K B
4 K B
64 K B
16 M B
256 M B
1000_4000H
1000_3F FF H
4 K B
A ctual size of P R O M /F lash is m ax. 8 M B .
C onfiguration:
1 M B : 1F CF _F F F F H -1F C 0_0000H
2 M B : 1F DF _F F F F H -1F C 0_0000H
A ctual size of S D R A M is m ax. 32 M B .
C onfiguration:
04 M B : 003F _F F F F H -0000_0000H
08 M B : 007F _F F F F H -0000_0000H
16 M B : 00F F _F F F F H -0000_0000H
32 M B : 01F F _F F F F H -0000_0000H
4 M B : 1F FF _F F F F H -1F C 0_0000H
8 M B : 1F FF _F F F F H -1F 80_0000H
E thernet Controller #2
4 K B
P C I C ontroller
(F or R egister)
1000_4F FF H
1000_5000H
100F _F F FF H
1010_0000H
102F _F F FF H
2 M B
1030_0000H
IB
U
S
T
a
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et
A
ddr
ess R
ange