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MPC8280 Datasheet(PDF) 435 Page - Freescale Semiconductor, Inc

Part # MPC8280
Description  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8280 Datasheet(HTML) 435 Page - Freescale Semiconductor, Inc

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Memory Controller
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
Freescale Semiconductor
11-15
11.3.2
Option Registers (OR
x)
The ORx registers define the sizes of memory banks and access attributes. The ORx attributes bits support
the following three modes of operation as defined by BR[MS].
•
SDRAM mode
•
GPCM mode
•
UPM mode
Figure 11-7 shows the ORx as it is formatted for SDRAM mode.
Table 11-5 describes ORx fields in SDRAM mode. For more details, see Section 11.4.12, “SDRAM
Configuration Examples.”
0
11
12
15
Field
SDAM
LSDAM...
Reset
0000_0000_0000_00001
R/W
R/W
Addr
0x10104 (OR0); 0x1010C (OR1); 0x10114 (OR2); 0x1011C (OR3); 0x10124 (OR4); 0x1012C (OR5);
0x10134 (OR6); 0x1013C (OR7); 0x10144 (OR8); 0x1014C (OR9); 0x10154 (OR10); 0x1015C (OR11)
16
17
18
19
22
23
25
26
27
28
31
Field ...LSDAM
BPD
ROWST
NUMR
PMSEL IBID
—
Reset
0000_00000_0000_00001
R/W
R/W
Addr
0x10106 (OR0); 0x1010E (OR1); 0x10116 (OR2); 0x1011E (OR3); 0x10126 (OR4); 0x1012E (OR5);
0x10136 (OR6); 0x1013E (OR7); 0x10146 (OR8); 0x1014E (OR9); 0x10156 (OR10); 0x1015E (OR11)
1 Reset values are for OR0 only. OR1–11 undefined at reset.
Figure 11-7. Option Registers (OR
x)—SDRAM Mode



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