Specifications

ST72104Gx, ST72215Gx, ST72216Gx, ST72254Gx
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SERIAL PERIPHERAL INTERFACE (Cont’d)
Figure 38. Serial Peripheral Interface Block Diagram
DR
Read Buffer
8-Bit Shift Register
Write
Read
Internal Bus
SPI
SPIE SPE SPR2 MSTR CPHA SPR0SPR1CPOL
SPIF
WCOL
MODF
SERIAL
CLOCK
GENERATOR
MOSI
MISO
SS
SCK
CONTROL
STATE
CR
SR
-
--
-
-
IT
request
MASTER
CONTROL