SA1110 Datasheet, PDF (118/406 Pages) Intel Corporation – Intel StrongARM SA-1110 Microprocessor

Memory and PCMCIA Control Module
10.1.1 Memory System Examples
This section gives examples of memory systems that are possible with the SA-1110. Figure 10-2
shows a system using 1M x 16 DRAMs for a total of 16 Mbytes of DRAM. Two banks of ROM
and two banks of Flash memory are shown, each on a 32-bit wide data bus. The PCMCIA interface
is not shown.
Figure 10-2. DRAM System Example
nRAS
<3:0>
nCAS
<3:0>
nWE
nOE
3
2
31:16
1
0
A25,
A24-10/
DRA14-0
A9-0
D31-0
nCS3-0
15:0
DRA<11:0>
A<21:2>
31:16
DRAM Bank 0
0
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
3
LCAS#
2
A11-0
D15-0
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
1
LCAS#
0
A11-0
D15-0
0
1Mx16
ROM
CE#
OE#
A19-0
D15-0
1Mx16
ROM
CE#
OE#
A19-0
D15-0
15:0
ROM Bank 0
DRAM Bank 1
1
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
3
LCAS#
2
A11-0
D15-0
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
1
LCAS#
0
A11-0
D15-0
1
1Mx16
ROM
CE#
OE#
A19-0
D15-0
1Mx16
ROM
CE#
OE#
A19-0
D15-0
ROM Bank 1
DRAM Bank 2
2
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
3
LCAS#
2
A11-0
D15-0
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
1
LCAS#
0
A11-0
D15-0
2
1Mx16
Flash
CE#
WE#
OE#
A19-0
D15-0
1Mx16
Flash
CE#
WE#
OE#
A19-0
D15-0
Flash Bank 0
DRAM Bank 3
3
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
LCAS#
A11-0
D15-0
1Mx16
DRAM
RAS#
WE#
OE#
UCAS#
LCAS#
A11-0
D15-0
3
1Mx16
Flash
CE#
WE#
OE#
A19-0
D15-0
1Mx16
Flash
CE#
WE#
OE#
A19-0
D15-0
Flash Bank 1
A6625-01
10-4
SA-1110 Developer’s Manual