NEC µPD72257 Preliminary User's Manual page 326

Chapter 9
9.6.2.8
Access
Address
Initial Value
31 30 29 28
15 14 13 12
0 0 0 0
R R R R
Bit Bit name
CSAADDR
31 to 16
[31:16]
326
MEMCSALIASn - Chip select alias address registers
These registers hold the alias address that correspond to each chip select.
A separate chip select alias address register is available for each chip select n.
These registers can be read/written in 32-bit units.
• MEMCSALIAS0: <MemC_Base> + 74
• MEMCSALIAS1: <MemC_Base> + 78
• MEMCSALIAS0: 0000 0000
• MEMCSALIAS1: 0400 0000
These registers are initialized by any reset.
27 26 25 24
CSAADDR[31:16]
11 10 9 8
0 0 0 0
R R R R
Writing to the read-only bits is ignored, reading returns undefined values.
Function
Upper 16 bits of chip select n alias address
Preliminary User's Manual S19203EE1V3UM00
External Memory Interface Controller
H
H
H
H
23 22 21
R/W
7 6 5
0 0 0
R R R
20 19 18 17
4 3 2 1
0 0 0 0
R R R R
16
0
0
R