EGLXT973QEA3V-873181 Cortina Systems Inc, EGLXT973QEA3V-873181 Datasheet - Page 21

• Manufacturer Part Number: EGLXT973QEA3V-873181
• Description: IC TXRX 2PORT ETH EXT 100-MQFP
• Manufacturer: Cortina Systems Inc

Specifications of EGLXT973QEA3V-873181

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1008-1001

LXT973 Transceiver
Datasheet
249426, Revision 6.0
13 July 2007
Table 6
Table 7
Cortina Systems
Power Supply Signal Descriptions
Per Port LED and Configuration Signal Descriptions (Sheet 1 of 2)
®
40, 91
27, 47,
84, 96
74
58, 73
65, 66
16, 41,
90,
28, 48,
83, 95
77
69, 62
61, 70
14
1. AI = Analog Input, AO = Analog Output, I = Input, O = Output, OD = Open Drain output,
49
50
51
82
81
80
6
5
1. AI = Analog Input, AO = Analog Output, I = Input, O = Output, OD = Open Drain output,
Pin #
Pin #
LXT973 10/100 Mbps Dual-Port Fast Ethernet PHY Transceiver
ST = Schmitt Triggered input, TS = Three-State-able output, SL = Slew-rate Limited output,
IP = Weak Internal Pull-up, ID = Weak Internal Pull-Down
ST = Schmitt Triggered input, TS = Three-State-able output, SL = Slew-rate Limited output,
IP = Weak Internal Pull-up, ID = Weak Internal Pull-Down
VCCD
VCCIO
VCCPECL
VCCR
VCCT
GNDD
GNDIO
GNDPECL
GNDR
GNDT
SGND
LED0_1
LED0_2
LED0_3
LED1_1
LED1_2
LED1_3
AUTO_NEG0
AUTO_NEG1
Signal Names
Signal Names
OD, TS,
OD, TS,
Type
Type
SL, IP
SL, IP
–
–
–
–
–
–
–
–
–
–
–
I
I
1
1
Digital Power Supply - Core. +2.5 V supply for core digital circuits.
Digital Power Supply - I/O Ring. +2.5/3.3 V supply for digital I/O
circuits. The digital input circuits running off this rail, having a TTL-
level threshold and over-voltage protection, may be interfaced with
3.3/5.0V when the I/O supply is 3.3 V, and 2.5/3.3/5.0V when the I/O
supply is 2.5 V.
Digital Power Supply - PECL Signal Detect Inputs. +2.5/3.3 V
supply for PECL Signal Detect input circuits. If Fiber Mode is not used,
tie these pins to GNDPECL to save power.
Analog Power Supply - Receive. +2.5 V supply for all analog
receive circuits.
Analog Power Supply - Transmit. +2.5 V supply for all analog
transmit circuits.
Digital Ground. Ground return for core digital supplies (VCCD). All
ground pins can be tied together using a single ground plane.
Digital GND - I/O Ring. Ground return for digital I/O circuits (VCCIO).
Digital GND - PECL Signal Detect Inputs. Ground return for PECL
Signal Detect input circuits.
Analog Ground - Receive. Ground return for receive analog supply.
All ground pins can be tied together using a single ground plane.
Analog Ground - Transmit. Ground return for transmit analog supply.
All ground pins can be tied together using a single ground plane.
Substrate Ground. Ground for chip substrate. All ground pins can be
tied together using a single ground plane.
Port 0 LED Drivers 1-3. These pins drive LED indicators for Port 0.
Each LED can display one of several available status conditions as
selected by the LED Configuration Register.
Port 1 LED Drivers 1-3. These pins drive LED indicators for Port 1.
Each LED can display one of several available status conditions as
selected by the LED Configuration Register.
Auto Negotiation Enable. When this pin is High, auto-negotiation is
enabled on the relevant port.
Signal Description
Signal Description
2.0 Signal Descriptions
Page 21