HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 509

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

10.2.9
TSYR is an 8-bit readable/writable register that selects independent operation or synchronous
operation for the channel 0 to 4 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 6—Reserved: Must always be written with 0.
Bits 5 to 0—Timer Synchro 5 to 0 (SYNC5 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 *
Bit n
SYNCn
0
1
Notes: 1. To set synchronous operation, the SYNC bits for at least two channels must be set to 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 *
:
:
—
—
7
0
—
—
6
0
SYNC5
R/W
5
0
1
/synchronous clearing *
SYNC4
R/W
4
0
Rev.6.00 Sep. 27, 2007 Page 479 of 1268
Section 10 16-Bit Timer Pulse Unit (TPU)
SYNC3
R/W
3
0
2
2
is possible
are possible.
SYNC2
R/W
2
0
SYNC1
REJ09B0220-0600
R/W
1
0
(Initial value)
1
, and
n = 5 to 0
SYNC0
R/W
0
0