UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!
Page Bookmarked
  1. Xilinx - All Programmable
  2. Support
  3. AR# 54360: Zynq-7000 AP SoC - How do I send less than four bytes to the TxFIFO in the Quad-SPI controller?

AR# 54360

Zynq-7000 AP SoC - How do I send less than four bytes to the TxFIFO in the Quad-SPI controller?

Description

Whenever I write less than four bytes to the TxFIFO (TXD0), the transmit does not complete.Why is this?

Solution

When sending less thanfour bytes, you must use TXD[1-3] instead of TXD0. Thisis described in the Register Overview section of the Quad SPI controller chapter in the Zynq-7000 Technical Reference Manual (UG585).

AR# 54360
Date 03/06/2013
Status Active
Type General Article
Devices
  • Zynq-7000
Tools
  • EDK - 14