TMP92CF30
2009-06-12
92CF30-139
3.7.18 Port R (R0 to R3)
Ports R0 to R3 are 4-bit general-purpose I/O ports. Each bit can be set individually for
input or output. Resetting sets port R0 to R3 to input port and output latch to “0”.
In addition to functioning as general-purpose I/O port, PR0 to PR3 can also function as
the SPI controller pin (SPCLK, SPCS , SPDO and SPDI).
Setting in the corresponding bits of PFCR and PFFC enables the respective functions.
Figure 3.7.49 Port R0
Selector
A
B
S
PR0(SPDI)
PR read
Direction
control
(on bit basis)
PRCR write
Function
control
(on bit basis)
PRFC write
R
Output latch
PR write
Reset
(to Port C)
SPDI input
Internal dat
a
bus
Содержание TLCS-900/H1 Series
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