IPR-PCIE/8 Altera, IPR-PCIE/8 Datasheet - Page 76

• Manufacturer Part Number: IPR-PCIE/8
• Description: IP CORE Renewal Of IP-PCIE/8
• Manufacturer: Altera
• Type: MegaCorer

Specifications of IPR-PCIE/8

• Software Application: IP CORE, Interface And Protocols, PCI
• Supported Families: Arria GX, Cyclone II, HardCopy II, Stratix II
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Function: PCI Express Compiler, x8 Link Width
• License: Renewal License
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

Parameter Settings
3–38
PCI Express Compiler User Guide
Maximum payload
size
Number of virtual
channels
Number of low
priority VCs
Auto configure retry
buffer size
Retry buffer size
Maximum retry
packets
Table 3–20. Buffer Setup Page Parameters (Part 1 of 3)
Parameter
128 Bytes,
256 Bytes,
512 Bytes,
1 KByte,
2 KBytes
1 - 4
None, 2, 3, 4
On/Off
512 Bytes to 16
KBytes (powers
of 2)
4 to 256 (powers
of 2)
Value
Table 3–20
PCI Express Compiler Version 6.1
Specify the maximum payload size supported. This parameter sets the
Read Only value of the max payload size supported field of the device
capabilities register and optimizes the MegaCore function for this size
payload.
the read-only extended virtual channel count field of the port virtual
channel capability register 1 and controls how many virtual channel
transaction layer interfaces are implemented.
group. The virtual channels numbered less than this value are low
priority. Virtual channels numbered greater than or equal to this value
are high priority. See
page 3–5
priority extended virtual channel count field of the port virtual channel
capability register 1.
Controls automatic configuration of the retry buffer based on the
maximum payload size.
Set the size of the retry buffer for storing transmitted PCI Express
packets until acknowledged.
Set the maximum number of packets that can be stored in the retry
buffer.
Specify the number of virtual channels supported. This parameter sets
Specify the number of virtual channels in the low-priority arbitration
describes the parameters you can set on this page.
for more information. This parameter sets the read-only low-
“Transmit Virtual Channel Arbitration” on
Description
Altera Corporation
December 2006