Table 51: Pci -X Registers - Broadcom BCM5722 Programmer's Manual

BCM5722
R Q C
EGISTER UICK ROSS
Register Bit
DMA Read/Write DMA_Write_Watermark
DMA Read/Write DMA_Write Control Boundary
PCI Command Bus_Master
PCI Command Memory_Write_And_Invalidate
PCI Command Parity_Error_Enable
PCI Status Detected_Parity_Error
PCI Status Master_Data_Parity_Error
Write DMA Status Write_DMA_PCI_Parity_Error
Read DMA Status Read_DMA_PCI_Parity_Error
MSI Status PCI_Parity_Error
PCI State Conventional_PCI
33/66PCI_66/133PCIX_Mode
No_Snoop
Split_Completion_Message_Class
Split_Completion_Message_Index
E ROM
XPANSION
D
ESCRIPTION
The expansion ROM on the BCM5722 Ethernet controller is intended for implementation of PXE (Preboot Execution
Environment). The devices support expansion ROM of up to 16 MB.
O C
PERATIONAL HARACTERISTICS
By default, the Expansion ROM is disabled and the firmware has to explicitly enable this feature by setting
PCI_State.PCI_Expansion_ROM_Desired bit to one (see
enabled, the bootcode firmware handles the Expansion ROM accesses of the device.
Page 135 Expansion ROM
R
EFERENCE

Table 51: PCI -X Registers

"PCI State Register (Offset 0x70)" on page
Bro adco m C orp or atio n
Cross Reference
"DMA Read/Write Control Register (Offset 0x6C)" on
page 205.
"Command Register (Offset 0x04)" on page
"Status Register (Offset 0x06)" on page
"Write DMA Status Register (Offset 0x4C04)" on page
"Read DMA Status Register (Offset 0x4804)" on page
"MSI Mode Register (Offset 0x6000)" on page
"PCI State Register (Offset 0x70)" on page
Programmer's Guide
10/15/07
190.
191.
315.
313.
330.
206.
206). Once this bit is
Document 5722-PG101-R