Altera Arria V GZ Avalon-ST - Manual (Page 45)

Register Name Range Default Value Description
Class code 24 bits 0x00000000 Sets the read-only value of the
Class Code
register.
Address offset: 0x008.
Subsystem
Vendor ID
16 bits 0x00000000 Sets the read-only value of the
Subsystem Vendor ID
register in the PCI Type 0 Configuration Space. This
parameter cannot be set to 0xFFFF per the PCI Express
Base Specification. This value is assigned by PCI-SIG to
the device manufacturer. This register is only valid in
the Type 0 (Endpoint) Configuration Space.
Address offset: 0x02C.
Subsystem
Device ID
16 bits 0x00000000 Sets the read-only value of the
Subsystem Device ID
register in the PCI Type 0 Configuration Space.
Address offset: 0x02C
At run time, you can change the values of these registers using the optional reconfiguration block signals.
Related Information
• Hard IP Reconfiguration on page 15-1
• PCI Express Base Specification 2.1 or 3.0
PCI Express and PCI Capabilities Parameters
This group of parameters defines various capability properties of the IP core. Some of these parameters
are stored in the PCI Configuration Space - PCI Compatible Configuration Space. The byte offset
indicates the parameter address.
Device Capabilities
Table 4-5: Capabilities Registers
Parameter Possible Values Default Value Description
Maximum
payload size
128 bytes
256 bytes
512 bytes
1024 bytes
2048 bytes
128 bytes Specifies the maximum payload size supported. This
parameter sets the read-only value of the max payload
size supported field of the Device Capabilities register
(0x084[2:0]). Address: 0x084.
4-8 PCI Express and PCI Capabilities Parameters
UG-01127_avst
2014.08.18
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