LAN9312 datasheet(445/458 Pages) SMSC

Part #	LAN9312

Description	High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

PDF	458 Pages

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Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

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445 / 458 page

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

SMSC LAN9312

445

Revision 1.2 (04-08-08)

DATASHEET

15.5.2

Reset and Configuration Strap Timing

This diagram illustrates the nRST pin timing requirements and its relation to the configuration strap

pins and output drive. Assertion of nRST is not a requirement. However, if used, it must be asserted

for the minimum period specified. Please refer to Section 4.2, "Resets," on page 36 for additional

information.

Note:

Device configuration straps are latched as a result of nRST assertion. Refer to Section 4.2.4,

"Configuration Straps," on page 40 for details.

Figure 15.2 nRST Reset Pin Timing

Table 15.6 nRST Reset Pin Timing Values

SYMBOL

DESCRIPTION

MIN

TYP

MAX

UNITS

trstia

nRST input assertion time

200

μS

tcss

Configuration strap pins setup to nRST deassertion

200

tcsh

Configuration strap pins hold after nRST deassertion

todad

Output drive after deassertion

tcss

nRST

Configuration

Strap Pins

trstia

tcsh

Output Drive

todad

LAN9312 Datasheet(PDF) 445 Page - SMSC Corporation

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