Switching From Receive To Transmit Dma - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

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SPI Data Transfer Operations

3. Clear all errors by writing to the W1C-type bits in the

ister. This ensures that no interrupts occur due to errors from a

previous DMA operation.

4. Reconfigure the

5. Configure DMA by writing to the DMA parameter registers and

Without disabling the SPI:

ORing 0xc0000 with the present value in the

example programs can use the

2. Disable DMA by writing 0x00 to the

3. Clear all errors by writing to the

ister. This ensures that no interrupts occur due to errors from a

previous DMA operation.

4. Reconfigure the

5. Configure DMA by writing to the DMA parameter registers and

enabling DMA.

Switching From Receive to Transmit DMA

Use the following sequence to switch from receive to transmit DMA. Note

address information.

without disabling SPI. This can be done by

are registers but they may not contain any bits, only

ADSP-2126x SHARC Processor Hardware Reference

bit (bit 1) in the

bits to clear

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