Section 13 PCI Controller (PCIC)
Rev. 1.00 Oct. 01, 2007 Page 528 of 1956
REJ09B0256-0100
13.4.2 PCIC
Initialization
After a power-on reset, the PCIC enable bit (ENBL) of the PCIC enable control register (PCIECR)
and the internal register initialization bit (CFINIT) of the PCI control register (PCICR) is cleared.
At this point, if the PCIC is operating as the PCI bus host (host bus bridge mode), the bus
privileges are permanently granted to the PCIC, and no device arbitration is performed on the PCI
bus. When the PCIC is not operating as host (normal mode), retries are returned without accepting
access from PCI external devices connected to the PCI bus. In addition, all accesses to the PCIC
from the CPU are invalid except the access to the PCIECR if the PCIECR.ENBL is cleared to 0. A
write access is invalid and a read access will read 0, none of the registers can be modified, and any
access to the PCI bus will not be executed.
To initialize the PCIC, first setting the enable bit in the PCIECR to 1. The PCIC's internal
configuration registers and local registers must be initialized before setting the CFINIT bit in the
PCICR to 1 (while the CFINIT bit is cleared to 0). On completion of initialization, set the CFINIT
bit to 1. When operating as host, arbitration is enabled; when operating as non-host, the PCIC can
be accessed from the PCI bus.
Regardless of whether the PCIC is operating as the host or normal, external PCI devices cannot be
accessed from the PCIC while the CFINIT bit is being cleared. Set the CFINIT bit to 1 before
accessing an external PCIC device.
Be sure to initialize the following registers while the CFINIT bit is being cleared (before setting to
1): PCI command (PCICMD), PCI status (PCISTATUS), PCI sub system vender ID (PCISVID),
PCI subsystem ID (PCISID), PCI local space register 0/1 (PCILSR 0/1) and PCI local address
register 0/1.
Содержание SH7763
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Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
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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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