SH7050 Datasheet, PDF (302/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 10 Advanced Timer Unit (ATU)
10.2.19 Duty Registers (DTR)
The duty registers (DTR) are 16-bit registers. The ATU has four duty registers, one each for
channels 6 to 9.
Channel
6
7
8
9
Abbreviation
DTR6
DTR7
DTR8
DTR9
Function
Duty registers
Duty Registers (DTR6 to DTR9)
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Initial value: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
The DTR registers are 16-bit readable/writable registers used for PWM duty storage.
The DTR value is constantly compared with the corresponding free-running counter (TCNT6 to
TCNT9) value, and when the two values match, the corresponding channel output pin (TO6 to
TO9) goes to 0 output.
The DTR registers are connected to the CPU via an internal 16-bit bus, and can only be accessed
by a word read or write.
The DTR registers are initialized to H'FFFF by a power-on reset, and in hardware standby mode
and software standby mode.
Rev. 5.00 Jan 06, 2006 page 282 of 818
REJ09B0273-0500