SIO1007 datasheet(46/108 Pages) MICROCHIP

部件名	SIO1007

功能描述	LPC Super I/O LPC IrDA Hot Docking Chip with UART

PDF	108 Pages

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制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

46 / 108 page

SIO1007

DS00002020A-page 46

 2005 - 2015 Microchip Technology Inc.

Note 1: The signal “ANY IRQ CHANGE/DRQ ASSERTION” is the same as “CHANGE/ASSERTION” in Table 13-1.

2: The SIO1007 continually monitors the state of nCLKRUN to maintain the PCI Clock until an active “ANY IRQ

CHANGE/DRQ ASSERTION” condition has been transferred to the host in a SER_IRQ/DMA cycle. For

example, if “ANY IRQ CHANGE/DRQ ASSERTION” is asserted before nCLKRUN is de-asserted (not

shown in Figure 13-2), the SIO1007 must assert nCLKRUN as needed until the SER_IRQ/DMA cycle has

completed.

FIGURE 13-1:

NCLKRUN SYSTEM IMPLEMENTATION EXAMPLE

FIGURE 13-2:

CLOCK START ILLUSTRATION

PCI CLOCK

GENERATOR

(Central Resource)

MASTER

TARGET

SIO

nCLKRUN

PCI_CLK

CLKRUN#

SIRQ_CLKRUN_EN

ANY IRQ CHANGE/

DRQ ASSERTION

1,2

CLKRUN#

DRIVEN BY

SIO

STOPS

DRIVING

CLKRUN#

2 CLKS MIN.

SIO1007 数据表(PDF) 46 Page - Microchip Technology