Table 6-9 – Intel PXA255 User Manual
Page 205
Intel® PXA255 Processor Developer’s Manual
6-23
Memory Controller
Use the information below to connect the processor to the SDRAM devices. Some of the
addressing combinations may not apply in SA1111 addressing mode. See
for a complete
listing of supported addressing combinations and how to connect the PXA255 processor to the
SA1111.
2x13x8x32
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
23 22
‘0’
9
8
7
6
5
4
3
2
2x13x8x16
NOT VALID (illegal addressing combination)
NOT VALID (illegal addressing combination)
2x13x9x32
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
23 22
‘0’
25 9
8
7
6
5
4
3
2
2x13x9x16
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
23 22
‘0’
9
8
7
6
5
4
3
2
1
2x13x10x32
NOT VALID (too big)
NOT VALID (too big)
2x13x10x16 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
23 22
‘0’ 25 9
8
7
6
5
4
3
2
1
2x13x11x32
NOT VALID (too big)
NOT VALID (too big)
2x13x11x16
NOT VALID (too big)
NOT VALID (too big)
Table 6-8. External to Internal Address Mapping for SA-1111 Addressing (Sheet 3 of 3)
# Bits
Bank x
Row x
Col x
Data
External Address pins at SDRAM RAS Time
MA<24:10>
External Address pins at SDRAM CAS Time
MA<24:10>
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Table 6-9. Pin Mapping to SDRAM Devices with Normal Bank Addressing (Sheet 1 of 3)
# Bits
Bank x
Row x
Col x
Data
Pin mapping to SDRAM devices for Normal Addressing.
MA[24:10] represent the address signals driven from the processor.
MA24 MA23 MA22 MA21 MA20 MA19 MA18 MA17 MA16 MA15 MA14 MA13 MA12 MA11 MA10
1x11x8x32
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x8x16
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x9x32
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x9x16
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x10x32
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x10x16
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x11x11x32
NOT VALID (illegal addressing combination)
1x11x11x16
NOT VALID (illegal addressing combination)
1x12x8x32
BA0
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x12x8x16
BA0
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1x12x9x32
BA0
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0