mc9s08gt16a Freescale Semiconductor, Inc, mc9s08gt16a Datasheet - Page 189

• Manufacturer Part Number: mc9s08gt16a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

12.1.1
Features of the SPI module include:
Freescale Semiconductor
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Write:
Write:
Write:
Write:
Write:
After SPI master initiates transfer by checking that SPTEF = 1 and then writing data to SPID:
Mode fault detection can be enabled for master mode in cases where more than one SPI device might become a master
at the same time.
Wait for SPTEF, then write to SPID
Wait for SPRF, then read from SPID
Master or slave mode operation
Full-duplex or single-wire bidirectional option
Programmable transmit bit rate
Double-buffered transmit and receive
Serial clock phase and polarity options
Slave select output
Selectable MSB-first or LSB-first shifting
SPIBR
SPIC1
SPIC2
Features
SPID
SPIS
SPIC1
SPIC2
SPIC1
SPIC2
SPIBR
Module/interrupt enables and configuration
Additional configuration options.
Baud rate = (BUSCLK/SPPR[2:0])/SPR2[2:0]
SPIE
SPRF
Bit 7
SPPR2
SPE
Bit 6
MC9S08GT16A/GT8A Data Sheet, Rev. 1
Figure 12-2. SPI Module Quick Start
to configure
to configure
to configure
to configure
to set
SPTIE
Module Initialization (Master):
SPPR1
SPTEF
Bit 5
Module Initialization (Slave):
Module Use:
MODFEN
MSTR
SPPR0
MODF
Bit 4
interrupts, set primary SPI options, slave mode select, and
system enable.
optional SPI features
interrupts, set primary SPI options, master mode select,
and system enable.
optional SPI features
baud rate
BIDIROE
CPOL
Bit 3
CPHA
SPR2
Bit 2
Serial Peripheral Interface (S08SPIV3)
SPISWAI
SSOE
SPR1
Bit 1
SPC0
SPR0
LSBFE
Bit 0
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