h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 392

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 12 8-Bit Timers
12.2.11 Input Capture Registers R and F (TICRR, TICRF) [TMRX Additional Functions]
TICRR and TICRF are 8-bit read-only registers. When the ICST bit in TCONRI is set to 1,
TICRR and TICRF capture the contents of TCNT successively on the rise and fall of the external
reset input. When one capture operation ends, the ICST bit is cleared to 0.
TICRR and TICRF are each initialized to H'00 by a reset and in hardware standby mode.
The TICRR and TICRF functions are used in timer connection. For details, see section 12.3.6,
Input Capture Operation and section 13, Timer Connection.
12.2.12 Timer Input Select Register (TISR) [TMRY Additional Function]
TISR is an 8-bit readable/writable register that selects the external clock/reset signal source for the
counter.
TISR is initialized to H'FE by a reset and in hardware standby mode.
Bits 7 to 1—Reserved: Do not write 0 to these bits.
Bit 0—Input Select (IS): Selects the internal synchronization signal (IVG signal) or the timer
clock/reset input pin (VSYNCI/TMIY (TMCIY/TMRIY)) as the external clock/reset signal source
for the counter.
Bit 0
IS
0
1
Rev. 3.00 Jan 18, 2006 page 364 of 1044
REJ09B0280-0300
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Description
IVG signal is selected
VSYNCI/TMIY (TMCIY/TMRIY) is selected
—
—
R
7
0
7
1
—
—
R
6
0
6
1
—
—
R
5
0
5
1
—
—
R
4
0
4
1
—
—
R
3
0
3
1
—
—
R
2
0
2
1
—
—
R
1
0
1
1
(Initial value)
R/W
IS
R
0
0
0
0