Datasheet

Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
Datasheet
SMSC LAN91C96 5v&3v Page 33 Revision 1.0 (10-24-08)
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
1 A X X X X
Everything.
Asserts the
modem power
down pin
(nPWDN) also
2 nA X 0 0 0
Ethernet Tx,
Rx, Link
3 nA X 0 0 1 Ethernet Tx
Ethernet Rx,
Link
4 nA X 0 1 1
Ethernet Tx, Rx,
Link
5 nA X 0 1 0
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
nA No change
No
change
No
change
No change
ECOR
Function
Enable Bit
value is
meaningless
in LOCAL
BUS mode
..2 nA X 0 0 0 Fully Awake
..3
By writing a 0 to CTR
WAKEUP_EN bit
nA X 0 0 0
..4
By writing a 0 to CTR
WAKEUP_EN bit
AND CTR PWRDWN
bit = 0
nA X 0 0 0
The CTR
PWRDWN bit
has
precedence
unlike the
LAN91C95
..5
By writing 0 to CTR
PWRDWN bit
nA X 0 0 0
Notes:
 The chart assumes that ECOR Function Enable bit is meaningless in LOCAL BUS mode.