HD64F3670 Datasheet, PDF (156/305 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

11.3.6 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 IOD1 0
4 IOD0 0
3−
1
R/W I/O Control D1 and D0
R/W 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
−
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 IOC1 0
0 IOC0 0
R/W I/O Control C1 and C0
R/W 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.
Rev. 1.0, 03/01, page 132 of 280