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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 Created 02/20/2013
Last Updated 03/06/2013
Status Active
Type General Article
Devices
  • Zynq-7000
Tools
  • EDK - 14