Data Transfers; Status Information - Analog Devices SHARC ADSP-21368 Hardware Reference Manual

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The endian format (LSB versus MSB first) is selectable by the

Data packing of two serial words into a 32-bit word is also selectable. The

Unpacking" on page 5-45

Data Transfers

Serial port data is transferred using two different methods:

• DMA transfers

• Core-driven single word transfers

DMA transfers can be set up to transfer a configurable number of serial

words between the SPORT buffers (

and internal memory automatically. For more information on Sport DMA

operations, see DMA Block transfers section on

5-73. Core-driven transfers use SPORT interrupts to signal the

processor core to perform single word transfers to/from the SPORT buff-

for more details.

Serial ports provide status information about data buffers through the

for more details.

Depending on the

ADSP-21368 SHARC Processor Hardware Reference

"Endian Format" on page 5-45

for more details.

status bits and error status through the

"Serial Port Control Registers (SPCTLx)" on

setting, these bits reflect the status of either the

data buffers.

"DMA Block Transfers"

"SPORT Interrupts" on

Serial Ports

for more details).

"Data Packing and

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