Section 16 Timer R; Overview; Features; Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

16.1

Overview

The Timer R consists of triple 8-bit down-counters. It carries VCR mode identification function
and slow tracking function in addition to the reloading function and event counter function.
16.1.1

Features

The Timer R consists of triple 8-bit reloading timers. By combining the functions of three units
of reloading timers/counters and by combining three units of timers, it can be used for the
following applications:
(1) Applications making use of the functions of three units of reloading timers.
(2) For identification of the VCR mode.
(3) For reel controls.
(4) For acceleration and braking of the capstan motor when being applied to intermittent
movements.
(5) Slow tracking mono-multi applications.
16.1.2

Block Diagram

The Timer R consists of three units of reload timer counters, namely, two units of reload timer
counters equipped with capturing function (TMRU-1 and TMRU-2) and a unit of reload timer
counter (TMRU-3).
Figure 16.1 is a block diagram of the Timer R.

Section 16 Timer R

Rev. 2.0, 11/00, page 331 of 1037