Section 14 Direct Memory Access Controller (DMAC)
Rev. 1.00 Oct. 01, 2007 Page 579 of 1956
REJ09B0256-0100
Bit Bit
Name
Initial
Value R/W Descriptions
19 HE 0 R/(W)
*
Half End Flag
After HIE (bit 18) is set to 1 and the number of transfers
become half of TCR (1 bit shift to right) which is set
before transfer starts, HE becomes 1.
This bit is set to 1 when the TCR value is equal to (TCR
set before transfer)/2: TCR value is set to even number
of times (TCR set before transfer -1)/2: TCR value is
set to odd number of times 8,388,608 (H'0080 0000):
TCR value is set to the maximum number of times
(H'0000 0000)
The HE bit is not set when transfers are ended by an
NMI interrupt or address error, or by clearing the DE bit
or the DME bit in DMAOR before the number of
transfers is decreased to half of the TCR value set
preceding the transfer. The HE bit is kept set when the
transfer ends by an NMI interrupt or address error, or
clearing the DE bit (bit 0) or the DME bit in DMAOR
after the HE bit is set to 1. To clear the HE bit, write 0
after reading 1 in the HE bit. This bit is valid only in
CHCR0 to CHCR3.
0: During the DMA transfer or DMA transfer has been
interrupted
TCR
>
(TCR set before transfer)/2
[Clearing condition]
Writing 0 after HE = 1 is read.
1: TCR • (TCR set before transfer)/2
18
HIE
0
R/W
Half End Interrupt Enable
Specifies whether an interrupt request is generated to
the CPU when the number of transfers is decreased to
half of the TCR value set preceding the transfer. When
the HIE bit is set to 1 and the HE bit is set, an interrupt
request is generated to the CPU. Clear this bit to 0
while reload mode is set. This bit is valid in CHCR0 to
CHCR3.
0: Half end Interrupt disabled
1: Half end Interrupt enabled
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 ...
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Страница 2026: ...SH7763 Hardware Manual ...