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  3. AR# 54360: Zynq-7000 SoC - How do I send less than four bytes to the TxFIFO in the Quad-SPI controller?

AR# 54360

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

描述

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

解决方案

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

AR# 54360
日期 06/13/2018
状态 Active
Type 综合文章
器件
Tools
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