SH7052 Datasheet, PDF (346/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Reload Counter 10C (TCNT10C): Reload counter 10C (TCNT10C) is a 16-bit readable/writable
register.
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/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
When TCNT10C = H'0001 in the down-count operation, the value in the reload register
(RLD10C) is transferred to TCNT10C, and a multiplied clock (AGCK1) is generated.
TCNT10C is connected to the CPU via an internal 16-bit bus, and can only be accessed by a word
read or write.
TCNT10C is initialized to H'0001 by a power-on reset, and in hardware standby mode and
software standby mode.
Correction Counter 10D (TCNT10D): Correction counter 10D (TCNT10D) is an 8-bit
readable/writable register that counts on external clock input (TI10) after transfer of the counter
value to correction counter E (TCNT10E). Set TI10 input with bits CKEG1 and CKEG0 in
TCR10. Counting will not be performed on TI10 input unless the count operation is enabled by
bit STR10 in TSTR1.
Bit: 7
6
5
4
3
2
1
0
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
At the external clock input (TI10) (AGCK) timing, the value in this counter is shifted according to
the multiplication factor set by bits PIM1 and PIM0 in timer I/O control register 10 (TIOR10) and
transferred to correction counter E (TCNT10E).
TCNT10D can only be accessed by a byte read or write.
TCNT10D is initialized to H'00 by a power-on reset, and in hardware standby mode and software
standby mode.
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