SH7058 Datasheet, PDF (387/1130 Pages) Renesas Technology Corp – Renesas 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. Transfer and 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.
Rev. 3.0, 09/04, page 346 of 1086