HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 325
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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Phase Counting Mode Application Example: Figure 11.29 shows an example in which channel
1 is in phase counting mode, and channel 1 is coupled with channel 0 to input servo motor 2-phase
encoder pulses in order to detect position or speed.
Channel 1 is set to phase counting mode 1, and the encoder pulse A-phase and B-phase are input
to TCLKA and TCLKB.
Channel 0 operates with TCNT counter clearing by TGRC_0 compare match; TGRA_0 and
TGRC_0 are used for the compare match function and are set with the speed control period and
position control period. TGRB_0 is used for input capture, with TGRB_0 and TGRD_0 operating
in buffer mode. The channel 1 counter input clock is designated as the TGRB_0 input capture
source, and the pulse widths of 2-phase encoder 4-multiplication pulses are detected.
TGRA_1 and TGRB_1 for channel 1 are designated for input capture, and channel 0 TGRA_0 and
TGRC_0 compare matches are selected as the input capture source and store the up/down-counter
values for the control periods.
This procedure enables the accurate detection of position and speed.
TCLKA
TCLKB
Figure 11.29
Edge
detection
circuit
Phase Counting Mode Application Example
TGRB_0 (pulse width capture)
TGRD_0 (buffer operation)
(position period capture)
(position control period)
(speed period capture)
(speed control period)
TGRA_1
TGRB_1
TGRA_0
TGRC_0
TCNT_1
TCNT_0
11.
Rev.4.00 Mar. 27, 2008 Page 281 of 882
Channel 1
Channel 0
Multi-Function Timer Pulse Unit (MTU)
+
+
-
-
REJ09B0108-0400
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