Section 21 Compare Match Timer (CMT)
Rev. 1.00 Oct. 01, 2007 Page 755 of 1956
REJ09B0256-0100
21.3 Operation
21.3.1 Counter
Operation
The CMT starts the operation of the counter by writing a 1 to the STRn bit in CMSTR of a
channel that has been selected for operation. Complete all of the settings before starting the
operation. Do not change the register settings other than by clearing flag bits.
The counter operates in one of two ways.
•
One-Shot Operation
One-shot operation is selected by setting the CMM bit in CMCSR to 0. When the value in
CMCNT matches the value in CMCOR, the value in CMCNT is cleared to H'00000000 and
the CMF bit in CMCSR is set to 1. Counting by CMCNT stops after it has been cleared.
To detect an overflow interrupt, set the value in CMCOR to H'FFFFFFFF. When the value in
CMCNT matches the value in CMCOR, CMCNT is cleared to H'00000000 and bits CMF and
OVF in CMCSR are set to 1.
Value in
CMCNT
CMCOR
CMF = 1
OVF = 1 (When an overflow is detected)
H'00000000
Time
Figure 21.2 Counter Operation (One-Shot Operation)
•
Free-Running Operation
Free-running operation is selected by setting the CMM bit in CMCSR to 1. When the value in
CMCNT matches the value in CMCOR, CMCNT is cleared to H'00000000 and the CMF bit in
CMCSR is set to 1. CMCNT resumes counting-up after it has been cleared.
To detect an overflow interrupt, set CMCOR to H'FFFFFFFF. When the values in CMCNT
and CMCOR match, CMCNT is cleared to H'00000000 and bits CMF and OVF in CMCSR
are set to 1.
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
Страница 2025: ......
Страница 2026: ...SH7763 Hardware Manual ...