Section 13 PCI Controller (PCIC)
Rev. 1.00 Oct. 01, 2007 Page 546 of 1956
REJ09B0256-0100
13.4.5
Host Bus Bridge Mode
(1) PCI Host bus bridge Mode Operation
The PCIC supports a subset of the PCI Local Bus Specification Revision 2.2 and can be connected
to a device with a PCI bus interface.
While the PCIC is set in host bus bridge mode, or while set in normal mode, operation differs
according to whether or not bus parking is performed, and whether or not the PCI bus arbiter
function is enabled or not.
In host bus bridge mode, the AD, CBE, PAR signal lines are driven by the PCIC when transfers
are not being performed on the PCI bus. When the PCIC subsequently starts transfers as master,
these signal lines continue to be driven until the end of the address phase.
The arbiter in the PCIC and the REQ and GNT between PCIC are connected internally. Here, pins
REQ0
/
REQOUT
,
REQ1
,
REQ2
, and
REQ3
function as the REQ inputs from the external masters
0 to 3. Similarly,
GNT0
/
GNTIN
,
GNT1
,
GNT2
, and
GNT3
function as the GNT outputs to
external masters 0 to 3. Including the PCIC, arbitration of up to five masters is possible.
(2) Configuration
Space
Access
The PCIC supports configuration mechanism #1. The PCI PIO address register (PCIPAR) and PCI
PIO data register (PCIPDR) correspond to the configuration address register and configuration
data register, respectively.
When PCIPDR is read from or written to after PCIPAR has been set, a configuration cycle is
issued on a PCI bus.
For a type 0 transfer, bits 10 to 2 of the configuration address register are sent without translation
and bits 31 to 11 are translated so that these bits can be used as the IDSEL signal.
Bit 16 of the AD signal is driven to 1 and the other bits are made 0 by setting the device number to
0.
Bit 17 of the AD signal is driven to 1 and the other bits are made 0 by setting the device number to
1. Similarly, setting the device number to 2 drives bit 18 of the AD signal to 1 and setting the
device number to 3 drives bit 19 of the AD signal to 0.
Bit 31 of the AD signal is driven to 1 and the other bits are made 0 by setting the device number to
16.
For details, refer to "PCI Local Bus Specification Revision 2.2, section 3.2.2.3 Configuration
Space Decoding".
Содержание SH7763
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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 ...
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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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