Analog Devices ADSP-21261 SHARC Hardware Reference Manual page 455

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discarded, and the

forming a receive DMA, the transmit buffer is assumed to

be empty. If

zero's on the

the contents of the

receive new data from the

data in the DMA buffer.

• If the DMA engine cannot keep up with the transmit data

stream during a transmit operation because another DMA

engine has been granted the bus (or for another reason), the

transmit port operates according to the state of the

repeatedly transmits zero's on the

the DMA buffer is empty, it repeatedly transmits the last

word it transmitted before the DMA buffer became empty.

All aspects of SPI receive operation should be ignored. The

dition cannot generate an error interrupt in this mode.

While a DMA transfer may be used on one channel (

core, (based on the

other direction.

ADSP-2126x SHARC Processor Hardware Reference

= 0 and the DMA buffer is full, the incoming data is

= 1, the device repeatedly transmits

= 1 and the DMA buffer is full, the device continues to

= 1 and the DMA buffer is empty, the device

bits should be ignored. The

Serial Peripheral Interface Port

= 0, it repeatedly transmits

pin, overwriting the older

status bits), can transfer data in the

overrun con-

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