DSP56857 datasheet(300/662 Pages) FREESCALE

Part #	DSP56857

Description	Digitial Signal Controller

PDF	662 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Interrupts

5685X Digital Signal Controller User Manual, Rev. 4

11-30

Freescale Semiconductor

Figure 11-18. SPI Interrupt Request Generation

The following sources in the SPI Status and Control Register can generate interrupt requests:

•

SPI Receiver Full (SPRF) bit — The SPRF bit becomes set every time a full data

transmission transfers from the Shift register to the receive data register. If the SPI

Receiver Interrupt Enable (SPRIE) bit is also set, SPRF can generate a SPI receiver/error

interrupt request.

•

SPI Transmitter Empty (SPTE) — The SPTE bit becomes set every time a full data

transmission transfers from the Data Transmit register to the Shift register. If the SPI

Transmit Interrupt Enable (SPTIE) bit is also set, SPTE can generate a SPTE interrupt

request.

SPTE

SPTIE

SPRF

SPRIE

ERRIE

MODF

OVRF

SPE

SPI TRANSMITTER

INTERRUPT REQUEST

SPI RECEIVER/ERROR

INTERRUPT REQUEST

DSP56857 Datasheet(PDF) 300 Page - Freescale Semiconductor, Inc