Article ID: 000083262 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Why doesn't the APEX 20KE pin tables differentiate between devices with an X suffix and devices without the X suffix?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

APEX 20KE devices with the X suffix have the ClockLock and ClockBoost circuitry, devices without an X suffix do not have the ClockLock or ClockBoost Circuitry. The device pin-outs are the same for both types of devices.

The pin file created by Quartus® II software will indicate the proper connections for the pins which are dedicated for the ClockLock and ClockBoost features for devices that do not contain that circuitry. For example, the non-X devices should have all of the VCC_CKLK and GND_CKLK pins connected to VCCINT and GND respectively and the CLKLK_ENA pin should be connected to VCCINT. The LOCK pins are available as regular user I/O pins. The CLKLK_OUT and CLKLK_FB pins are not available for use in non-X devices and should be connected to GND. They are not part of the device I/O count.

Related Products

This article applies to 1 products

APEX™ 20KE

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