s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 171

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

15.4 Functional Description
Figure 15-2
Freescale Semiconductor
SPMSTR
RECEIVER/ERROR CPU INTERRUPT REQUEST
DIVIDER
CLOCK
TRANSMITTER CPU INTERRUPT REQUEST
BUS CLOCK
shows the structure of the SPI module.
÷ 128
SPE
÷ 32
÷ 2
÷ 8
SPR1
SELECT
CLOCK
SPI control register (SPCR)
SPI status and control register (SPSCR)
SPI data register (SPDR)
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
SPR0
Figure 15-2. SPI Module Block Diagram
Table 15-2. I/O Register Addresses
7
CONTROL
Register Name
TRANSMIT DATA REGISTER
RECEIVE DATA REGISTER
6
SPI
SHIFT REGISTER
INTERNAL BUS
5
4
3
MODF
OVRF
SPRF
SPTE
SPMSTR
2
1
MODFEN
ERRIE
SPTIE
SPRIE
SPE
0
CLOCK
LOGIC
CPHA
CPOL
SPWOM
Address
$000D
$000E
$000F
M
S
CONTROL
LOGIC
PIN
Functional Description
MISO
MOSI
SPSCK
SS
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