Section 13 PCI Controller (PCIC)
Rev. 1.00 Oct. 01, 2007 Page 562 of 1956
REJ09B0256-0100
13.5 Usage
Notes
13.5.1
Notes on PCIC Target Reading
When the PCIC is used in target mode and all the three conditions below are satisfied, data may be
lost during a PCIC target read.
1. PFCS bit in PCICR = 1 (32-byte pre-fetch enabled)
2. FTO bit in PCICR = 1 (
TRDY
control enabled)
3. PFE bit in PCICR = 1 (pre-fetch enabled)
For target reading in target mode, at least one of the above three conditions must be cancelled.
13.5.2
Notes on Host Mode
When the PCIC is used while all the five conditions below are satisfied,
REQn
(n = 3 to 1) with
the lowest priority is masked, thus disabling correct transfers via the PCI bus, which leads to
unstable operation of the PCI bus system.
1. Host mode (MD6 = high)
2. PCI bus master arbitration mode is set to fixed mode (BMAM bit in PCICR = 0)
3. In addition to this LSI (with the PCIC in host mode), two or more external PCI devices that
can be a bus master are connected to the PCI bus.
4. Among the above external devices, there is at least one device (
REQm
) that does not execute
REQ
negation and
FRAME
assertion simultaneously when a single transaction is requested
(single or burst transfer).
5. There is an external device (
REQn
; n > m) that can be a bus master with a priority lower than
the priority of the external device (
REQm
) satisfying condition 4 above.
PCICLK
REQm
GNTm
FRAME
Figure 13.27 Timing Example of Device (
REQm
) Not Executing
REQ
Negation and
FRAME
Assertion Simultaneously
Содержание SH7763
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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 ...
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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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