s5920 Applied Micro Circuits Corporation (AMCC), s5920 Datasheet - Page 44

• Manufacturer Part Number: s5920
• Description: Pci Product
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

S5920 – PCI Product: PCI Configuration Registers
PCI COMMAND REGISTER (PCICMD)
Figure 9. PCI Command Register
AMCC Confidential and Proprietary
Register Name:
Address Offset:
Power-up value:
Boot-load:
Attribute:
Size:
15
Fast Back-to-Back
SERR# Enable
Wait Cycle Enable
PERR# Enable
Palette Snoop Enable
Memory Write and Invalidate Enable
Special Cycle Enable
Bus Master Enable
Memory Access Enable
I/O Access Enable
PCI Command
04h-05h
0000h
not used
Read/Write (R/W on 4 bits, R/O for
all others)
16 bits
Reserved = 00
9
0
X
8
This 16-bit register provides basic control over a
device’s ability to respond to or perform PCI accesses.
This register is defined by the PCI specification and its
implementation is required of all PCI devices. Four of
the ten implemented bits are required by the S5920;
those which are not required are hardwired to 0. The
definitions for all the fields are provided here for
completeness.
7
0
X
6
5
0
4
0
Revision 1.02 – April 12, 2007
3
0
2
0
Data Book
X
1
X
0
DS1596
44