Analog Devices ADSP-21261 SHARC Hardware Reference Manual page 487

With disabled SPI:
1. Write 0x00 to the
SPI also clears the
2. Disable DMA by writing 0x00 to the
3. Clear all errors by writing to the W1C-type bits in the
registers. 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
enable DMA.
With enabled SPI:
1. Clear the
abling the SPI. This can be done by OR'ing 0xC0000 with the
present value in the
use the
fer status.
2. Disable DMA by writing 0x00 to the
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
the
TXSPI
5. Configure DMA by writing to the DMA parameter registers and
enable DMA.
ADSP-2126x SHARC Processor Hardware Reference
SPICTLx
/
RXSPIx
registers and enable the SPI ports.
SPICTLx
/ registers and the buffer status without dis-
RXSPIx TXSPxI
SPICTLx
and
RXFLSH TXFLSH
register to remove the clear condition on
SPICTL
/ registers.
RXSPI
Serial Peripheral Interface Port
registers to disable SPI. Disabling the
registers and the buffer status.
TXSPIx
SPIDMAxC
registers. For example, programs can
bits to clear
TXSPIx
SPIDMAC
register.
SPISTATx
/ and the buf-
RXSPIx
register.
reg-
SPISTAT
10-51