MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 230

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

SPI
SPI Status and
Control Register
MC68HC708XL36
230
SPWOM — SPI Wired-OR Mode Bit
SPE — SPI Enable
SPTIE— SPI Transmit Interrupt Enable
The SPI status and control register contains flags to signal the following
conditions:
The SPI status and control register also contains bits that perform the
following functions:
This read/write bit disables the pullup devices on pins SPSCK, MOSI,
and MISO so that those pins become open-drain outputs.
This read/write bit enables the SPI module. Clearing SPE causes a
partial reset of the SPI. (See
clears the SPE bit.
This read/write bit enables CPU interrupt requests or DMA service
requests generated by the SPTE bit. SPTE is set when a byte
transfers from the transmit data register to the shift register. Reset
clears the SPTIE bit.
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Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Wired-OR SPSCK, MOSI, and MISO pins
0 = Normal push-pull SPSCK, MOSI, and MISO pins
1 = SPI module enabled
0 = SPI module disabled
1 = SPTE CPU interrupt requests or SPTE DMA service requests
0 = SPTE CPU interrupt requests or SPTE DMA service requests
Receive data register full
Failure to clear SPRF bit before next byte is received (overflow
error)
Inconsistent logic level on SS pin (mode fault error)
Transmit data register empty
Enable error interrupts
Enable mode fault error detection
Select master SPI baud rate
enabled
disabled
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SPI
Resetting the SPI
on page 222.) Reset
MOTOROLA
30-spi_c