HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 357

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.2.9
TSYR is an 8-bit readable/writable register that selects independent operation or synchronous
operation for the channel 0 to 2 TCNT counters. A channel performs synchronous operation when
the corresponding bit in TSYR is set to 1.
TSYR is initialized to H'00 by a reset, and in hardware standby mode.
Bits 7 and 3—Reserved: Should always be written with 0.
Bits 2 to 0—Timer Synchro 2 to 0 (SYNC2 to SYNC0): These bits select whether operation is
independent of or synchronized with other channels.
When synchronous operation is selected, synchronous presetting of multiple channels*
synchronous clearing through counter clearing on another channel*
Notes: 1. To set synchronous operation, the SYNC bits for at least two channels must be set to 1.
Note: n = 2 to 0
Bit n
SYNCn
0
1
Bit
Initial value
R/W
2. To set synchronous clearing, in addition to the SYNC bit, the TCNT clearing source
Timer Synchro Register (TSYR)
must also be set by means of bits CCLR2 to CCLR0 in TCR.
Description
TCNTn operates independently (TCNT presetting/clearing is unrelated to
other channels)
TCNTn performs synchronous operation
TCNT synchronous presetting/synchronous clearing is possible
:
:
:
—
—
7
0
—
—
6
0
—
—
5
0
—
—
4
0
Rev.3.00 Mar. 26, 2007 Page 315 of 772
Section 9 16-Bit Timer Pulse Unit (TPU)
—
—
3
0
2
SYNC2
are possible.
R/W
2
0
SYNC1
REJ09B0355-0300
R/W
1
0
(Initial value)
1
, and
SYNC0
R/W
0
0