C161U
The External Bus Interface
Preliminary Data Sheet
207
02.2000
PRELIMINARY
PRE
LI
M
INAR
Y
- E
XCE
RP
T
-
The following tables show the different definitions of range size selections and range
start addresses for the two types of address selections:
Range
Size
RGSZ
Selected
Address
Range
Relvant(R) bits of
RGSAD
Selected Range Start Address
(Relevant(R) bits of RGSAD)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
11xx
256 Byte
512 Bytes
1 KBytes
2 KBytes
4 KBytes
8 KBytes
16 KBytes
32 KBytes
64 KBytes
128 KBytes
256 KBytes
512 KBytes
- reserved
RRRR RRRR RRRR
RRRR RRRR RRR0
RRRR RRRR RR00
RRRR RRRR R000
RRRR RRRR 0000
RRRR RRR0 0000
RRRR RR00 0000
RRRR R000 0000
RRRR 0000 0000
RRR0 0000 0000
RR00 0000 0000
R000 0000 0000
0000 RRRR RRRR RRRR 0000 0000
0000 RRRR RRRR RRR0 0000 0000
0000 RRRR RRRR RR00 0000 0000
0000 RRRR RRRR R000 0000 0000
0000 RRRR RRRR 0000 0000 0000
0000 RRRR RRR0 0000 0000 0000
0000 RRRR RR00 0000 0000 0000
0000 RRRR R000 0000 0000 0000
0000 RRRR 0000 0000 0000 0000
0000 RRR0 0000 0000 0000 0000
0000 RR00 0000 0000 0000 0000
0000 R000 0000 0000 0000 0000
Table 31
Address Range and Address Range Start Definition of XADRS1/2/3/
4 register
Range
Size
RGSZ
Selected
Address
Range
Relvant(R) bits of
RGSAD
Selected Range Start Address
(Relevant(R) bits of RGSAD)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
11xx
4 KBytes
8 KBytes
16 KBytes
32 KBytes
64
KBytes
128 KBytes
256 KBytes
512 KBytes
1 MByte
2 MByte
4 MByte
8 MByte
- reserved
RRRR RRRR RRRR
RRRR RRRR RRR0
RRRR RRRR RR00
RRRR RRRR R000
RRRR RRRR 0000
RRRR RRR0 0000
RRRR RR00 0000
RRRR R000 0000
RRRR 0000 0000
RRR0 0000 0000
RR00 0000 0000
R000 0000 0000
RRRR RRRR RRRR 0000 0000 0000
RRRR RRRR RRR0 0000 0000 0000
RRRR RRRR RR00 0000 0000 0000
RRRR RRRR R000 0000 0000 0000
RRRR RRRR 0000 0000 0000 0000
RRRR RRR0 0000 0000 0000 0000
RRRR RR00 0000 0000 0000 0000
RRRR R000 0000 0000 0000 0000
RRRR 0000 0000 0000 0000 0000
RRR0 0000 0000 0000 0000 0000
RR00 0000 0000 0000 0000 0000
R000 0000 0000 0000 0000 0000
Table 32
Address Range and Address Range Start Definition of XADRS5/6
register