Timer Synchro Register (Tsyr) - Renesas H8S Series Hardware Manual

Section 12 16-Bit Timer Pulse Unit (TPU)
12.3.9

Timer Synchro Register (TSYR)

TSYR 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.
Bit Bit Name Initial Value R/W
7 to 3 – 0
2 SYNC2 0
1 SYNC1 0
0 SYNC0 0
Rev. 3.00 Jul. 14, 2005 Page 332 of 986
REJ09B0098-0300
Description
R/W Reserved:
The initial value should not be changed.
R/W Timer Synchro 2 to 0
R/W These bits select whether operation is independent of or
synchronized with other channels.
R/W
When synchronous operation is selected, synchronous
presetting of multiple channels, and synchronous clearing
through counter clearing on another channel are possible.
To set synchronous operation, the SYNC bits for at least
two channels must be set to 1. To set synchronous
clearing, in addition to the SYNC bit, the TCNT clearing
source must also be set by means of bits CCLR2 to
CCLR0 in TCR.
0: TCNT_2 to TCNT_0 operates independently
(TCNT presetting /clearing is unrelated to other
channels)
1: TCNT_2 to TCNT_0 performs synchronous operation
TCNT synchronous presetting/synchronous clearing is
possible