REGISTER SET
B.4.3 Board CSR (BRD_CSR) – Offset 0x04
Field
Description
Access
Reset
Value
0
Little Endian – Set to ‘1’ for unswapped control
registers. Setting to ‘0’ has no effect.
R/W 1
1
Reset – Write ‘1’ to reset the board. Writing ‘0’ has no
effect.
W 0
2
Swap data bytes – Set to ‘1’ to 32-bit swap the data
transferred through PIO transactions. ‘0’ for unswapped
transactions.
R/W 0
3
JTAG TCK# - Controls the TCK# line on the JTAG port.
R/W
0
4
JTAG TMS# - Controls the TMS# line on the JTAG
port.
R/W 0
5
JTAG TDO# - Controls the TDO# line on the JTAG
port.
R/W 0
6
JTAG TDI# - TDI# line from the JTAG port.
R
1
7
JTAG Enable – Enable the JTAG port on the FPGA.
R/W
0
13 to 8
Revision ID – Revision level of the board controller.
R
See
desc.
14
3.3 V/5 V PCI Signaling –
A ‘1’ indicates the SL240 card uses 3.3 V PCI
signaling.
A ‘0’ indicates the SL240 card uses 5 V PCI signaling.
R
See
desc.
15
SL240 – A ‘1’ indicates this is an SL240 board.
R
See
desc.
23 to 16 Extended Revision ID – These bits are used to identify
intermediate or special firmware revisions. (Note 1)
R
See
desc.
24
Big Endian – Set to ‘1’ to swap the control registers.
Set to ‘0’ for Little Endian.
R/W 0
25
64-bit transaction disable – Set to ‘1’ to disable 64-bit
transactions. Set to ‘0’ to enable 64-bit transactions
R/W 0
26
Swap words – Set to ‘1’ to swap words within a 64-bit
transaction. Set to ‘0’ for no swapping.
R/W 0
31 to 27 Reserved.
None
0
Note 1: Extended Revision ID.
Bits 23 and 22 of the Extended Revision ID provide information about the
FibreXtreme model as follows:
00 – 33 MHz PCI based FibreXtreme products (PCI, PMC, and CompactPCI)
01 – 66 MHz PCI based FibreXtreme products (PCI and PMC)
10 – Reserved for future 33 MHz products.
11 – Reserved for future 66 MHz products.
Copyright 2006
B-4
FibreXtreme Hardware Reference Manual
Содержание FibreXtreme SL240
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