SH7059 Datasheet, PDF (359/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

11. Advanced Timer Unit-II (ATU-II)
11.2.26 Channel 10 Registers
Counters (TCNT)
Channel 10 has seven TCNT counters: one 32-bit TCNT, four 16-bit TCNTs, and two 8-bit TCNTs.
The input clock is selected with prescaler register 4 (PSCR4). Count operations are performed by setting STR10 to 1 in
timer start register 1 (TSTR1).
Channel
10
Abbreviation
TCNT10AH, AL
TCNT10B
TCNT10C
TCNT10D
TCNT10E
TCNT10F
TCNT10G
Function
32-bit free-running counter (initial value H'00000001)
8-bit event counter (initial value H'00)
16-bit reload counter (initial value H'0001)
8-bit correction counter (initial value H'00)
16-bit correction counter (initial value H'0000)
16-bit correction counter (initial value H'0001)
16-bit free-running counter (initial value H'0000)
Free-Running Counter 10AH, AL (TCNT10AH, TCNT10AL): Free-running counter 10AH, AL (comprising
TCNT10AH and TCNT10AL) is a 32-bit readable/writable register that counts on an input clock and is cleared to initial
value by input capture input (TI10) (AGCK).
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
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
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
TCNT10A can only be accessed by a longword read or write. Word reads or writes should not be used.
TCNT10A is initialized to H'00000001 by a power-on reset, and in hardware standby mode and software standby mode.
Event Counter 10B (TCNT10B): Event counter 10B (TCNT10B) is an 8-bit readable/writable register that counts on
external clock input (TI10) (AGCK). For this operation, TI10 input must be set with bits CKEG1 and CKEG0 in TCR10.
TI10 input will be counted even if halting of the count operation is specified 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
TCNT10B can only be accessed by a byte read or write.
TCNT10B is initialized to H'00 by a power-on reset, and in hardware standby mode and software standby mode.
Rev.3.00 Mar. 12, 2008 Page 269 of 948
REJ09B0177-0300