PCI CONTROLLER
DEVICE SPECIFICATION
S5933
PCI CONTROLLER
4.3 PCI COMMAND REGISTER (PCICMD)
Register Name:
Address Offset:
Power-up value:
Boot-load:
PCI Command
04h-05h
This 16-bit register contains the PCI Command. The
function of this register is defined by the PCI specifi-
cation and its implementation is required of all PCI
devices. Only six of the ten fields are used by this
device; those which are not used are hardwired to 0.
The definitions for all fields are provided here for
completeness.
0000h
not used
Attribute:
Read/Write (R/W on 6 bits, Read
Only for all others)
Size:
16 bits
Figure 4-3. PCI Command Register
3
0
8
7
0
2
1
9
0
6
5
0
4
0
15
Reserved = 00's
X
X
X
X
X
0
Fast Back-to-Back
SERRE
Wait Cycle Enable
Parity Error Enable
Palette Snoop Enable
Memory Write and Invalidate Enable
Special Cycle Enable
Bus Master Enable
Memory Access Enable
I/O Access Enable
Applied Micro Circuits Corporation
6195 Lusk Blvd., San Diego, CA 92121 • (619) 450-9333
4-6
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
