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Rev. 1.0, 07/01, page 160 of 372
12.3.6 Timer I/O Control Register 1(TIOR1)
TIOR1 selects the functions of GRC and GRD, and specifies the functions of the FTIOC and
FTIOD pins.
Bit Bit Name Initial Value R/W Description
7 − 1 − Reserved
This bit is always read as 1 and cannot be modified.
6 IOD2 0 R/W I/O Control D2
Selects the GRD function.
0: GRD functions as an output compare register
1: GRD functions as an input capture register
5
4
IOD1
IOD0
0
0
R/W
R/W
I/O Control D1 and D0
When IOD2=0,
00: No output at compare match
01: 0 output to the FTIOD pin at GRD compare match
10: 1 output to the FTIOD pin at GRD compare match
11: output toggles to the FTIOD pin at GRD compare
match
When IOD2=1,
00: Input capture at rising edge at the FTIOD pin
01: Input capture at falling edge at the FTIOD pin
1X: Input capture at rising edge and falling edge at the
FTIOD pin
3 − 1 − Reserved
This bit is always read as 1 and cannot be modified.
2 IOC2 0 R/W I/O Control C2
Selects the GRC function.
0: GRC functions as an output compare register
1: GRC functions as an input capture register
1
0
IOC1
IOC0
0
0
R/W
R/W
I/O Control C1 and C0
When IOC2=0,
00: No output at compare match
01: 0 output to the FTIOC pin at GRC compare match
10: 1 output to the FTIOC pin at GRC compare match
11: Output toggles to the FTIOC pin at GRC compare
match
When IOC2=1,
00: Input capture to GRC at rising edge of the FTIOC pin
01: Input capture to GRC at falling edge of the FTIOC pin
1X: Input capture to GRC at rising edge and falling edge of
the FTIOC pin
Legend X: Don't care.