44 PCIE-5565PIORC Reflective Memory Board
Table 3-36 Mode/DMA Arbitration Register
MARBR: BAR0/1 Offset $08 or $AC
Bit
Description
Read
Write
Value after
PCI Reset
23:0
Reserved
Yes
No
$040000
24
Reserved
Yes
Yes
0
25
Reserved
Yes
No
1
31:26
Reserved
Yes
No
$00
Table 3-37 Big/Little Endian Descriptor Register
BIGEND: BAR0/1 Offset $0C
Bit
Description
Read
Write
Value after
PCI Reset
4:0
Reserved
Yes
No
$00
5
PCI PIO RFM Address Space Big Endian Mode (Address Invariance
).
Writing a one (1) specifies use of Big Endian data ordering for PCI
accesses to the RFM Address Space.
Writing a zero (0) specifies Little Endian ordering.
Yes
Yes
0
6
Reserved
Yes
No
0
7
DMA Channel 0 Big Endian Mode (Address Invariance)
.
Writing a one (1) specifies use of Big Endian data ordering for DMA
Channel 0 accesses to the RFM Address Space.
Writing a zero (0) specifies Little Endian ordering.
Yes
Yes
0