TMPR4925 datasheet(264/590 Pages) TOSHIBA

tên linh kiện	TMPR4925

Giải thích chi tiết về linh kiện	64-Bit TX System RISC TX49 Family

PDF	590 Pages

Scroll/Zoom	100%

nhà sản xuất	TOSHIBA [Toshiba Semiconductor]

Trang chủ	http://www.semicon.toshiba.co.jp/eng

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264 / 590 page

Chapter 10 PCI Controller

10-2

10.1.4

PCI Arbiter

•

Supports four external PCI bus masters

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Uses the Programmable Fairness algorithm (two levels with different priorities for four round-

robin request/grant pairs)

•

Supports bus parking

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Bus master uses the Most Recently Used algorithm

•

Unused slots and broken masters can be automatically disabled after Power On reset

•

On-chip arbitration function can be disabled and external arbiter can be used

10.1.5

PDMAC (PCI DMA Controller)

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Direct Memory Access (DMA) Controller dedicated to 1-channel PCI

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Is possible to transfer data using minimal G-Bus bandwidth

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Data can be transferred bidirectionally between the G-Bus and the PCI Bus

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Specifying a physical address on the PCI Bus and an address on the G-Bus makes it possible to

automatically transfer data between the PCI Bus and the G-Bus

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Supports the Chain DMA mode, in which a Descriptor containing chain-shaped addresses and a

transfer size is automatically read from memory while DMA transfer continuous

•

On-chip 16-stage 32-bit data buffer

TMPR4925 bảng dữ liệu(PDF) 264 Page - Toshiba Semiconductor