MC68HC08AS20 Datasheet, PDF (274/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

18.5 Functional Description
Table 18-3 summarizes the SPI I/O registers and Figure 18-1 shows the
structure of the SPI module.
Addr
$0010
Table 18-3. SPI I/O Register Summary
Register Name
Bit 7
SPI Control Register
(SPCR)
Read:
Write:
SPRIE
Reset: 0
6
5
4
3
2
1
R SPMSTR CPOL CPHA SPWOM SPE
0
1
0
1
0
0
Bit 0
SPTIE
0
$0011
SPI Status and Control Register ^{Read: SPRF}
(SPSCR) _Write:
Reset: 0
ERRIE
0
OVRF
0
MODF
0
SPTE
MODFEN SPR1
1
0
0
SPR0
0
$0012
SPI Data Register ^{Read: R7}
R6
R5
R4
R3
R2
R1
R0
(SPDR) _{Write: T7}
T6
T5
T4
T3
T2
T1
T0
Reset:
Unaffected by Reset
R = Reserved
= Unimplemented
Advance Information
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MC68HC08AS20 —Rev. 4.1
Freescale Semiconductor