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AR# 3759

CPLD: XC9500/XL/XV - Which XC9500 devices are electrically compliant to PCI specification?

Description

Priority: Standard

General Description:

Which 9500 devices (9500/XL/XV) are electrically compliant to PCI specification?

Solution

The 5v XC9500 devices are not specified to be PCI compliant, although they might meet the PCI electrical compliance specifications in the -5, -7, -10 speed grades--meaning that these devices might be compliant to interface to other PCI devices on a board. However, Xilinx does not test this compliance and does not guarantee PCI compliance on the XC9500 family.

The 3.3v XC9500XL devices are not specified to be PCI compliant, although they might meet the PCI electrical compliance specifications in the -5, -6, -7, -10 speed grades--meaning that these devices might be compliant to interface to other PCI devices on a board, with the exception that there are no internal clamping diodes or transistors to 3.3v. Such clamp devices are required in the 2.1 PCI specification for all 3.3v devices. However, such clamp devices interfere with the 5v tolerance in the XC9500XL I/O structure, and therefore they are omitted.

The V2.1 PCI specification does not specify 2.5v signaling capability and therefore does not apply to the 2.5v XC9500XV devices.

AR# 3759
Date Created 08/21/2007
Last Updated 12/15/2012
Status Active
Type General Article