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PCI Configuration Space Parameters
Table 4-1 · General Parameters (Continued)
Name
ONCHIP_IDSEL
STALL_MODE
Values
0 to 31
0 or 1
Description
In some applications, the FPGA will be the system controller as well, and include the IDSEL
decoding. When value is non-zero, the IDSEL input is directly driven by the AD (value )
output. When 0, IDSEL is driven from the IDSEL input.
Controls the speed of FRAME and IRDY assertion when STALL_MASTER is used.
0: FRAME will be asserted followed by IRDY two clocks later.
1: FRAME assertion will be delayed by an additional clock cycle and IRDY asserted one clock
later.
Note:
IRDY assertion assumes that the data fetch from the backend has completed whilst
STALL_MASTER was asserted.
PCI Configuration Space Parameters
Table 4-2 · PCI Configuration Space Parameters
Name
VENDOR_ID
DEVICE_ID
REVISION_ID
BASE_CLASS
SUB_CLASS
PROGRAM_IF
SUBVENDOR_ID
SUBSYSTEM_ID
CIS_UPPER
CIS_LOWER
ENABLE_HOT_SWAP
MINMAXLAT
CMD_INITVAL
Values
0 to 65,535
0 to 65,535
0 to 255
0 to 255
0 to 255
0 to 255
0 to 65,535
0 to 65,535
0 to 65,535
0 to 65,535
0 or 1
0 to 65,535
0 to 65,335
Description
Sets the user vendor ID value in the PCI configuration space. The Actel Vendor ID is 4522
(11AAh) and may be used with permission. Actel will allocate a device ID and sub-vendor
ID on demand. Contact Technical Support to request this service.
Sets the user device ID value in the PCI configuration space.
Sets the user revision ID value in the PCI configuration space.
Sets the user base class value in the PCI configuration space.
Sets the user subclass value in the PCI configuration space.
Sets the user program interface value in the PCI configuration space.
Sets the user subvendor ID value in the PCI configuration space.
Sets the user subsystem ID value in the PCI configuration space.
Sets the value of the upper 16 bits of the CardBus CIS pointer.
Sets the value of the lower 16 bits of the CardBus CIS pointer.
Enables the hot-swap register and functionality.
Sets the minimum grant and maximum latency values at location 3Eh in the configuration
space.
Sets the value of the PCI command register at reset. For PCI compliance, this should be set
to zero.
v4.0
37
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