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TMPR4925 Datasheet(PDF) 190 Page - Toshiba Semiconductor

Part # TMPR4925
Description  64-Bit TX System RISC TX49 Family
PDF  590 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMPR4925 Datasheet(HTML) 190 Page - Toshiba Semiconductor

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Chapter 8 DMA Controller
8-20
8.3.15
Restrictions in Access to PCI Bus
The PCI Controller detects a bus error if the DMA Controller performs one of the following accesses
to the PCI Bus.
•
Burst transfer exceeding 8 words (PCICSTATUS.TLB)
•
Address Increment value –4 Burst transfer (PCICSTATUS.NIB)
•
Address Increment Value 0 Burst transfer (PCICSTATUS.ZIB)
•
Dual Address Burst transfer when the setting for DMSARn, DMDARn, or DMCNTRn is not a
word boundary (PCICSTATUS.IAA)
In addition, Single Address transfers between an external I/O device and the PCI Bus are not
supported. Data transfer is not performed, but no error is detected.



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