Datasheet

Functional Description
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor 207
Figure 19-2. SPI Module Block Diagram
TRANSMITTER CPU INTERRUPT REQUEST
RECEIVER/ERROR CPU INTERRUPT REQUEST
76543210
SPR1
SPMSTR
TRANSMIT DATA REGISTER
SHIFT REGISTER
SPR0
CLOCK
SELECT
÷ 2
CLOCK
DIVIDER
÷ 8
÷ 32
÷ 128
CLOCK
LOGIC
CPHA CPOL
SPI
SPRIE
SPE
SPWOM
SPRF
SPTE
OVRF
M
S
PIN
CONTROL
LOGIC
RECEIVE DATA REGISTER
SPTIE
SPE
INTERNAL BUS
BUS CLOCK
MODFEN
ERRIE
CONTROL
MODF
SPMSTR
MOSI
MISO
SPSCK
SS