CS5320 datasheet(53/160 Pages) AMCC

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CS5320 データシート(PDF) 53 Page - Applied Micro Circuits Corporation

部品番号	CS5320

部品情報	PCI Match Maker, 3.3V

PDF	160 Pages

Scroll/Zoom	100%

メーカー	AMCC [Applied Micro Circuits Corporation]

ホームページ	http://www.amcc.com

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53 / 160 page

S5320 – PCI Match Maker: PCI Configuration Registers

Revision 5.03 – June 14, 2006

AMCC Confidential and Proprietary

DS1656

Data Sheet

1. The Expansion ROM Base Address Register nvRAM boot value is internally hardwired to FFFFF80Xh, where X = 000xb (i.e., only the least-

significant bit, or Address Decode Enable bit, is programmable). This defines both the minimum and maximum expansion ROM size sup-

ported by the S5320 (2K bytes). The Address Decode Enable bit in the nvRAM (the LSB) must be set to enable this region. If not set, a PCI

Configuration read of this region will always respond with 00000000h.

Table 27. Read Response to Expansion ROM Base Address Register (after all ones written)

Response

Size in Bytes

nvRAM boot value

00000000h

none - disabled

00000000h or BIOS missing 1

FFFFF801h

2K bytes (512 DWORDs)

FFFFF801h

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