Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 537

This register is not affected by HRESET or SRESET.
Bits Name
0–4 BSIZE PCMCIA bank size. Determines the address mask field of each POR and provides masking for any
of the corresponding bits in the associated PBR. The bank size is calculated as banksize = 2
where BSIZE represents the gray code shown below:
00000 1 byte
00001 2 bytes
00011 4 bytes
00010 8 bytes
00110 16 bytes
00111 32 bytes
00101 64 bytes
00100 128 bytes
01100 256 bytes
BSIZE determines not only the bank size, but also how the address is compared with PBRB[PBA].
If virtual field, MASK, is defined as shown below:
BSIZE
00000
00001
00011
00010
00110
00111
00101
00100
01100
01101
01111
01110
01010
01011
01001
01000
11000
11001
11011
11010
11110
11111
11101
11100
10100
10101
10111
Addr & MASK = PBA & MASK for a valid PCMCIA access; otherwise, it is not a valid PCMCIA
access
5–11 — Reserved, should be cleared.
Freescale Semiconductor
Table 16-13. POR Field Descriptions
01101 512 bytes
01111 1 Kbyte
01110 2 Kbytes
01010 4 Kbytes
01011 8 Kbytes
01001 16 Kbytes
01000 32 Kbytes
11000 64 Kbytes
11001 128 Kbytes
MASK
1111 1111 1111 1111 1111 1111 1111 1111
1111 1111 1111 1111 1111 1111 1111 1110
1111 1111 1111 1111 1111 1111 1111 1100
1111 1111 1111 1111 1111 1111 1111 1000
1111 1111 1111 1111 1111 1111 1111 0000
1111 1111 1111 1111 1111 1111 1110 0000
1111 1111 1111 1111 1111 1111 1100 0000
1111 1111 1111 1111 1111 1111 1000 0000
1111 1111 1111 1111 1111 1111 0000 0000
1111 1111 1111 1111 1111 1110 0000 0000
1111 1111 1111 1111 1111 1100 0000 0000
1111 1111 1111 1111 1111 1000 0000 0000
1111 1111 1111 1111 1111 0000 0000 0000
1111 1111 1111 1111 1110 0000 0000 0000
1111 1111 1111 1111 1100 0000 0000 0000
1111 1111 1111 1111 1000 0000 0000 0000
1111 1111 1111 1111 0000 0000 0000 0000
1111 1111 1111 1110 0000 0000 0000 0000
1111 1111 1111 1100 0000 0000 0000 0000
1111 1111 1111 1000 0000 0000 0000 0000
1111 1111 1111 0000 0000 0000 0000 0000
1111 1111 1110 0000 0000 0000 0000 0000
1111 1111 1100 0000 0000 0000 0000 0000
1111 1111 1000 0000 0000 0000 0000 0000
1111 1111 0000 0000 0000 0000 0000 0000
1111 1110 0000 0000 0000 0000 0000 0000
1111 1100 0000 0000 0000 0000 0000 0000
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Table 16-13 describes POR fields.
Description
11011 256 Kbytes
11010 512 Kbytes
11110 1 Mbyte
11111 2 Mbytes
11101 4 Mbytes
11100 8 Mbytes
10100 16 Mbytes
10101 32 Mbytes
10111 64 Mbytes
PCMCIA Interface
BSIZE
,
16-15