SH7708 Datasheet, PDF (314/625 Pages) Renesas Technology Corp – SuperH™ RISC engine

1 1 . 2 TMU Registers
1 1 . 2 . 1 Timer Output Control Register (TOCR)
TOCR is an 8-bit read/write register that selects whether to use the external TCLK pin as an
external clock or an input capture control usage input pin, or an output pin for the on-chip RTC
output clock. TOCR is initialized to H'00 by a power-on reset or manual reset, but is not
initialized in standby mode, and its contents are retained.
Bit: 7
6
5
4
3
2
1
0
Bit name: —
—
—
—
—
—
— TCOE
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R/W
Bits 7 to 1—Reserved: These bits always read 0. The write value should always be 0.
Bit 0—Timer Clock Pin Control (TCOE): Selects use of the timer clock pin (TCLK) as an
external clock input pin or input pin for input capture control for the on-chip timer, or as an
output pin for the on-chip RTC output clock.
Bit 0: TCOE
0
1
Description
Timer clock pin (TCLK) used as external clock input or input capture control
input pin for the on-chip timer
(Initial
value)
Timer clock pin (TCLK) used as output pin for on-chip RTC output clock
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