PCI Express Function Tab

The Function tab is where you define the PCI ID for your application. The default vendor ID (0x1f7a) is Efinix's PCI SIG vendor ID number. In endpoint mode you can use up to 4 physical functions.

Table 1. Function Tab Settings (Endpoint Mode)where n is 0-3.
Parameter	Choices	Notes
Subsystem Vendor ID	User defined	Default: 0x1f7a
Vendor ID	User defined	Default: 0x1f7a
Total Physical Functions	1-4	Default: 4. Choose how many physical functions you need.
Physical Function n
BAR0 Aperture BAR2 Aperture BAR4 Aperture	128 B - 256 GB	Default: 4 KB Choose the base address register aperture size.
BAR1 Aperture BAR3 Aperture BAR5 Aperture	128 B - 2 GB	Default: 4 KB Choose the base address register aperture size.
BAR0 Control BAR2 Control BAR4 Control	Disabled 32 bit I/O BAR 32 bit non-prefetchable memory BAR 32 bit prefetchable memory BAR 64 bit non prefetchable memory BAR 64 bit prefetchable memory BAR	BAR0 default: 32 bit non-prefetchable memory BAR BAR2, BAR4 default: Disabled Choose the BAR type.
BAR1 Control BAR3 Control BAR5 Control	Disabled 32 bit I/O BAR 32 bit non-prefetchable memory BAR 32 bit prefetchable memory BAR	Default: Disabled Choose the BAR type.
Class Code	User defined	Default: 0x0
Device ID	User defined	Default: 0x100
Expansion ROM BAR Aperture	2 KB, 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB, 512 KB, 1 MB, 2 MB, 4 MB, 8 MB, 16 MB, Disabled	Default: 4 KB
Interrupt Pin	NO INT, INTA, INTB, INTC, INTD	Default: NO INT
MSI Multiple Message Capable	1, 2, 4, 8, 16, 32	Choose the number of MSI messages the endpoint is allowed to send.
MSIX BAR Indicator	BAR0, BAR1, BAR2, BAR3, BAR4, BAR5	Default: BAR0
MSIX Capabilities Pointer	User defined	Default: 0xCo. Allowed values are 0x0 to 0xff.
MSIX Capability ID	User defined	Default: 0x11. Allowed values are 0x0 to 0xff.
MSIX PBA Indicator	BAR0, BAR1, BAR2, BAR3, BAR4, BAR5	Default: BAR0
MSIX PBA Offset	User defined	Default: 0x1. Allowed values are 0x0 to 0x1fffffff.
MSIX Table Offset	User defined	Default: 0x0. Allowed values are 0x0 to 0x1fffffff.
MSIX Table Size	User defined	Default: 0x0. Allowed values are 0x0 to 0x7ff.
Programming Interface Byte	User defined	Default: 0x0
Revision ID	User defined	Default: 0x0
Sub-Class Code	User defined	Default: 0x0
Subsystem ID	User defined	Default: 0x0

Table 2. Function Tab Settings (Root Port Mode)
Parameter	Choices	Notes
Class Code	User defined	Default: 0x0
Device ID	User defined	Default: 0x100
Programming Interface Byte	User defined	Default: 0x0
Revision ID	User defined	Default: 0x0
Sub-Class Code	User defined	Default: 0x0
Subsystem Vendor ID	User defined	Default: 0x1f7a
Vendor ID	User defined	Default: 0x1f7a