Section 13 PCI Controller (PCIC)
Rev. 1.00 Oct. 01, 2007 Page 544 of 1956
REJ09B0256-0100
(7) Cache
Coherency
The PCIC supports cache snoop function.
When the PCIC functions as a target device, cache coherency is guaranteed for accesses from a
master device connected to a PCI bus in both the host bus bridge mode and normal mode.
When accessing this LSI cacheable area, set the cache snoop registers: the PCI cache snoop
control registers (PCICSCR0 and PCICSCR1) and PCI cache snoop address register (PCICSAR0
and PCICSAR1).
Usage Notes
•
Up to 2 conditions can be set as snoop address. Address comparison is logical OR of setting 2
conditions.
•
When using this function, execute memory read or write after flush/purge request issued to the
CPU cache in the access of cache hit. It reduces PCI bus transfer speed and CPU performance.
•
When using this function, do not use the prefetch function.
(Do not set PFE bit in the PCICR to 1.)
•
Do not use this function when the CPU is sleep state. If cache hit occurs in sleep state, it
becomes an error access on the SuperHyway bus, and memory read or memory write does not
execute. Specify the SNPMD bit in the PCICSCR to 00 before the CPU enters sleep mode. To
keep the coherency before and after the CPU sleep, cache purge should be executed before
sleep instruction executed.
•
Do not use ether of the following functions and the cache shoop function simultaneously.
Debug function using an emulator (Disable this function when using an emulator).
L memory or memory mapped cache access from the DMAC.
Summary of Contents for SH7763
Page 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Page 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Page 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Page 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Page 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Page 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Page 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Page 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Page 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Page 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Page 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Page 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Page 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Page 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Page 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Page 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Page 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Page 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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