MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 322

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Peripheral Interface (SPI)
20.14 I/O Registers
20.14.1 SPI Control Register
Technical Data
322
Address: $0010
Three registers control and monitor SPI operation:
The SPI control register:
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
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SPI control register (SPCR)
SPI status and control register (SPSCR)
SPI data register (SPDR)
Enables SPI module interrupt requests
Configures the SPI module as master or slave
Selects serial clock polarity and phase
Configures the SPSCK, MOSI, and MISO pins as open-drain
outputs
Enables the SPI module
SPRIE
Bit 7
0
Serial Peripheral Interface (SPI)
Figure 20-13. SPI Control Register (SPCR)
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= Unimplemented
DMAS
6
0
SPMSTR
5
1
CPOL
4
0
CPHA
3
1
MC68HC908GR8 — Rev 4.0
SPWOM
2
0
SPE
1
0
MOTOROLA
SPTIE
Bit 0
0