LAN91C96-MS datasheet(32/125 Pages) SMSC

32 / 125 page

Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet

Rev. 03-28-07

Page 32

SMSC LAN91C965v&3v

DATASHEET

5.5

LAN91C96 Power Down States

Table 5.6 - LOCAL BUS Mode Defined States (Refer To Table 5.7 For Next States To Wake-Up Events)

CURRENT STATE

NO.

PWRDWN PIN

(A= ASSRTD)

ECOR

FUNCTION

ENABLE

ECSR

POWER

DOWN

CTR

PWRDW

N BIT

CTR

WAKEU

P_EN

BIT

POWERS DOWN

DOES NOT

POWER

DOWN

Everything.

Asserts the

modem power

down pin

(nPWDN) also

Ethernet Tx,

Rx, Link

Ethernet Tx

Ethernet Rx,

Link

Ethernet Tx, Rx,

Link

Ethernet Tx, Rx,

Link

Notes:

The chart assumes that ECOR Function Enable bit is meaningless in LOCAL BUS mode.

ECSR Power Down bit must not be set to one(1) in LOCAL BUS mode.

Table 5.7- LOCAL BUS Mode

NEXT STATE

NO.

WAKES UP BY

PWR DWN PIN

(A=ASSRTD)

ECOR

FUNCTION

ENABLE

ECSR

POWER

DOWN

CTR

PWR-

DWN BIT

CTR

WAKEUP_

EN BIT

COMMENTS

..1

PWRDWN Pin

deassertion

No change

change

No change

ECOR

Function

Enable Bit

value is

meaningless

in LOCAL

BUS mode

..2

Fully Awake

..3

By writing a 0 to CTR

WAKEUP_EN bit

..4

By writing a 0 to CTR

WAKEUP_EN bit

AND CTR PWRDWN

bit = 0

The CTR

PWRDWN bit

has

precedence

unlike the

LAN91C95

..5

By writing 0 to CTR

PWRDWN bit

Notes:

The chart assumes that ECOR Function Enable bit is meaningless in LOCAL BUS mode.

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