LAN9211 datasheet(133/147 Pages) SMSC

Part #	LAN9211

Description	High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

PDF	147 Pages

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Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

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High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

Datasheet

SMSC LAN9211

133

Revision 2.9 (03-01-12)

DATASHEET

6.6

PIO Writes

PIO writes are used for all LAN9211 write cycles. PIO writes can be performed using Chip Select (nCS)

or Write Enable (nWR). Either or both of these control signals must go high between cycles for the

period specified.

Note: The “Data Bus” width is 16 bits.

Note: A PIO Write cycle begins when both nCS and nWR are asserted. The cycle ends when either

or both nCS and nWR are deasserted. They may be asserted and deasserted in any order.

Figure 6.5 PIO Write Cycle Timing

Table 6.7 PIO Write Cycle Timing

SYMBOL

DESCRIPTION

MIN

TYP

MAX

UNITS

tcycle

Write Cycle Time

tcsl

nCS, nWR Assertion Time

tcsh

nCS, nWR Deassertion Time

tasu

Address Setup to nCS, nWR Assertion

tah

Address Hold Time

tdsu

Data Setup to nCS, nWR Deassertion

tdh

Data Hold Time

Data Bus

nCS, nWR

A[7:1]

LAN9211 Datasheet(PDF) 133 Page - SMSC Corporation