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AN4051 - FX2LP™ GPIF FLOW STATE FEATURE FOR UDMA | Cypress Semiconductor

AN4051 - FX2LP™ GPIF FLOW STATE FEATURE FOR UDMA

Last Updated: 
Jul 06, 2020
Version: 
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This is an Obsolete Application Note
The document AN4051 - FX2LP™ GPIF FLOW STATE FEATURE FOR UDMA has been marked as obsolete. The obsolete version of this application note is still available with the below description but may not be complete or valid any longer. If you have any questions or require support in regards to the below application note content, please click here and create a technical support case.
AN4051 introduces the FX2LPTM GPIF flow state feature, which extends GPIF to handle ATAPI UDMA. This application note includes flow state definitions and related register functions. It concludes with an example of how to use the flow state control in a UDMA transfer.

AN4051 introduces the FX2LPTM GPIF flow state feature, which extends GPIF to handle ATAPI UDMA. This application note includes flow state definitions and related register functions. It concludes with an example of how to use the flow state control in a UDMA transfer.

Introduction

Although the FX2LP™ GPIF flow state feature was created for UDMA, it is not limited to that interface. The GPIF flow state can capture other bus protocols, which gives it a value and lifetime that extends beyond UDMA. This is in keeping with the basic philosophy of GPIF.