Table 3-21. Powerpc Data To Dram Data Mapping - Motorola MVME2600 Series Reference Manual

Table 3-21. PowerPC Data to DRAM Data Mapping

PowerPC
A[27] A[28] Data Bits
0 0 dh[00:07]
0 0 dh[08:15]
0 0 dh[16:23]
0 0 dh[24:31]
0 0 dl[00:07]
0 0 dl[08:15]
0 0 dl[16:23]
0 0 dl[24:31]
0 1 dh[00:07]
0 1 dh[08:15]
0 1 dh[16:23]
0 1 dh[24:31]
0 1 dl[00:07]
0 1 dl[08:15]
0 1 dl[16:23]
0 1 dl[24:31]
1 0 dh[00:07]
1 0 dh[08:15]
1 0 dh[16:23]
1 0 dh[24:31]
1 0 dl[00:07]
1 0 dl[08:15]
1 0 dl[16:23]
1 0 dl[24:31]
1 1 dh[00:07]
1 1 dh[08:15]
1 1 dh[16:23]
1 1 dh[24:31]
1 1 dl[00:07]
1 1 dl[08:15]
1 1 dl[16:23]
1 1 dl[24:31]
DRAM Array
Upper Falcon DRAM
RA[12]
Data Bits
0 rd[00:07]
0 rd[08:15]
0 rd[16:23]
0 rd[24:31]
0 -
0 -
0 -
0 -
0 rd[32:39]
0 rd[40:47]
0 rd[48:55]
0 rd[56:63]
0 -
0 -
0 -
0 -
1 rd[00:07]
1 rd[08:15]
1 rd[16:23]
1 rd[24:31]
1 -
1 -
1 -
1 -
1 rd[32:39]
1 rd[40:47]
1 rd[48:55]
1 rd[56:63]
1 -
1 -
1 -
1 -
Data Paths
Lower Falcon DRAM
Data Bits
-
-
-
-
rd[00:07]
rd[08:15]
rd[16:23]
rd[24:31]
-
-
-
-
rd[32:39]
rd[40:47]
rd[48:55]
rd[56:63]
-
-
-
-
rd[00:07]
rd[08:15]
rd[16:23]
rd[24:31]
-
-
-
-
rd[32:39]
rd[40:47]
rd[48:55]
rd[56:63]
3-63
3