LAN9312 datasheet(446/458 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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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

Revision 1.2 (04-08-08)

446

SMSC LAN9312

DATASHEET

15.5.3

Power-On Configuration Strap Valid Timing

This diagram illustrates the configuration strap valid timing requirements in relation to power-on. In

order for valid configuration strap values to be read at power-on, the following timing requirements

must be met.

Note:

Configuration straps must only be pulled high or low. Configuration straps must not be driven

as inputs.

Note:

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

15.5.2, "Reset and Configuration Strap Timing," on page 445 and Section 4.2.4, "Configuration

Straps," on page 40 for additional details.

Figure 15.3 Power-On Configuration Strap Latching Timing

Table 15.7 Power-On Configuration Strap Latching Timing Values

SYMBOL

DESCRIPTION

MIN

TYP

MAX

UNITS

tcfg

Configuration strap valid time

VDD33IO

Configuration Straps

tcfg

2.0V

LAN9312 Datasheet(PDF) 446 Page - SMSC Corporation