SH7052 Datasheet, PDF (341/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Offset Base Registers 1 and 2 (OSBR1, OSBR2)
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Initial value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: R R R R R R R R R R R R R R R R
OSBR1 and OSBR2 are 16-bit read-only registers used exclusively for input capture. OSBR1 and
OSBR2 use the channel 0 ICR0A input capture register input as their trigger signal, and store the
TCNT1A or TCNT2A value on detection of an edge.
The OSBR registers can only be accessed by a word read.
The OSBR registers are initialized to H'0000 by a power-on reset, and in hardware standby mode
and software standby mode.
For details, see sections 10.3.8, Twin-Capture Function.
10.2.22 Cycle Registers (CYLR)
The cycle registers (CYLR) are 16-bit registers. The ATU-II has eight cycle registers, four each in
channels 6 and 7.
Channel
6
7
Abbreviation
CYLR6A to CYLR6D
CYLR7A to CYLR7D
Function
16-bit PWM cycle registers
Cycle Registers (CYLR6A to CYLR6D, CYLR7A to CYLR7D)
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 CYLR registers are 16-bit readable/writable registers used for PWM cycle storage.
The CYLR value is constantly compared with the corresponding free-running counter (TCNT6A
to TCNT6D, TCNT7A to TCNT7D) value, and when the two values match, the corresponding
timer start register (TSR) bit (CMF6A to CMF6D, CMF7A to CMF7D) is set to 1, and the free-
running counter (TCNT6A to TCNT6D, TCNT7A to TCNT7D) is cleared. At the same time, the
buffer register (BFR) value is transferred to the duty register (DTR).
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