Datasheet

ST72321Rx ST72321ARx ST72321Jx
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SERIAL PERIPHERAL INTERFACE (Cont’d)
Table 20. SPI Register Map and Reset Values
Address
(Hex.)
Register
Label
76543210
0021h
SPIDR
Reset Value
MSB
xxxxxxx
LSB
x
0022h
SPICR
Reset Value
SPIE
0
SPE
0
SPR2
0
MSTR
0
CPOL
x
CPHA
x
SPR1
x
SPR0
x
0023h
SPICSR
Reset Value
SPIF
0
WCOL
0
OVR
0
MODF
00
SOD
0
SSM
0
SSI
0