LAN91C96I_07 SMSC [SMSC Corporation], LAN91C96I_07 Datasheet - Page 16

• Manufacturer Part Number: LAN91C96I_07
• Description: Non-PCI Single-Chip Full Duplex Ethernet Controller
• Manufacturer: SMSC [SMSC Corporation]

Rev. 03-28-07
11,19,
48,59,
TQFP
98,38
91
94
95
83
82
77
76
81
80
85
84
75
73
72
74
66
88
90
1
PIN NO.
13,21,40,
61,100
QFP
50,
93
96
97
85
84
79
78
83
82
87
86
77
75
74
76
68
90
92
3
ENEEP
nEN16
XTAL1
XTAL2
RECP/
RECN
TXP/nCOLL
TXN/nCRS
COLP
COLN
TPERXP
TPERXN
TPETXP
TPETXN
TPETXDP
TPETXDN
PWRDWN/
TXCLK
RBIAS
nXENDEC
VDD
PIN NAME
I with
pullup
**
I with
pullup
**
Iclk
**
Iclk
Diff.
Input
**
Diff.
Output
I
**
Diff.
Input
**
Diff.
Input
**
Diff.
Output
Diff.
Output
I with
pullup
**
Analog
Input
I with
pullup
**
TYPE
DATASHEET
Input. This active high input enables the EEPROM to be read
or written by the LAN91C96I. Internally pulled up. Must be
connected to ground if no serial EEPROM is used.
Input. When low the LAN91C96I is configured for 16 bit bus
operation. If left open the LAN91C96I works in 8 bit bus
mode. 16 bit configuration can also be programmed via serial
EEPROM or software initialization of the CONFIGURATION
REGISTER.
An external parallel resonance 20MHz crystal should be
connected across these pins. If an external clock source is
used, it should be connected to this pin (XTAL1) and XTAL2
should be left open.
An external parallel resonance 20MHz crystal should be
connected across these pins. If an external clock source is
used, it should be connected to XTAL1 and this pin (XTAL2)
should be left open.
AUI receive differential inputs.
INTERNAL ENDEC - (nXENDEC pin open). In this mode
TXP and TXN are the AUI transmit differential outputs. They
must be externally pulled up using 150 ohm resistors.
EXTERNAL ENDEC - (nXENDEC pin tied low). In this mode
the pins are inputs used for collision and carrier sense
functions.
AUI collision differential inputs. A collision is indicated by a
10MHz signal at this input pair.
10BASE-T receive differential inputs.
INTERNAL ENDEC - 10BASE-T transmit differential outputs.
10BASE-T delayed transmit differential outputs. Used in
combination with TPETXP and TPETXN to generate the
10BASE-T transmit pre-distortion.
INTERNAL ENDEC - Powerdown input. It keeps the
LAN91C96I in powerdown mode when high (open). Must be
low for normal operation.
EXTERNAL ENDEC - Transmit clock input from external
ENDEC.
A resistor should be connected between this pin and analog
ground to determine the threshold level of the TP Receive,
AUI Receive, AUI Collision and AUI Transmit level.
When tied low the LAN91C96I is configured for EXTERNAL
ENDEC. When tied high or left open the LAN91C96I will use
its internal encoder/decoder.
+5.0V power supply pins or 3.3V power supply pins
Page 16
Non-PCI Single-Chip Full Duplex Ethernet Controller
DESCRIPTION
SMSC DS – LAN91C96I