EGLXT973QEA3V Intel, EGLXT973QEA3V Datasheet - Page 13

• Manufacturer Part Number: EGLXT973QEA3V
• Manufacturer: Intel

Specifications of EGLXT973QEA3V

• Lead Free Status / RoHS Status: Compliant

LXT973 PHY Transceiver
Specification Update
249737, Revision 10.0
20 March 2007
Item 10:
Problem
Table 1
Implication
Note:
Table 2
Workaround Port 0 LEDs function properly when Port 1 is placed in Hardware Power-Down mode with
Cortina Systems
Port 1 LED Functionality Incorrect when Port 0 in Hardware Power-
Down Mode
When Port 0 is placed in Hardware Power-Down mode while Port 1 is active, LED pins
LED1_2 and LED1_3 do not function as specified in the table in Revision 003 of the
datasheet.
LED Configurations
There are two behaviors associated with this errata.
Monitoring LED1_2 and/or LED1_3 when Port0 is in Hardware Power-Down Mode is
misleading. The following table lists the affect of the errata for each configuration.
This errata affects only LEDn_2 and LEDn_3 of Port 1 only when Port 0 is in Hardware
Power-Down Mode.
LED Configurations
the PWRDWN1 pin. As a result, depending on design requirements, the following options
can be used as workarounds:
®
LED_CFG0
LED_CFG0
• The blinking status of Activity, Collision, and MII Isolate are not indicated in each
• When only a single status is configured to be indicated (Link, Duplex, Receive, or
• Use Port 0 and Hardware Power-Down Port 1.
LXT973 10/100 Mbps Dual-Port Fast Ethernet PHY Transceiver
mode specified in the LED Configurations table. [The non-blinking status (Link or
Duplex) is not affected when the LED is configured to provide dual status.]
Transmit) by LED1_2 or LED1_3, the LED stays on or off instead of switching to
indicate the correct status.
0
1
0
1
0
1
0
1
LED_CFG1
LED_CFG1
0
0
1
1
0
0
1
1
LEDn_1
LEDn_1
Speed
Speed
Speed
Speed
Speed
Speed
Link
Link
Link/Activity
Link/Activity
MII Isolate
MII Isolate
LEDn_2
Receive
LEDn_2
Receive
Link/
Link/
Link
Link
Duplex/Collision
Duplex/Collision
Transmit
LEDn_3
Collision
Collision
Duplex/
Duplex/
Duplex
LEDn_3
Transmit
Duplex
Led2 and Led3 go on and stay
on when Port 0 is in Hardware
Power-Down mode.
Activity and Collision are
ignored, and the Link and
Duplex status are available
and accurate.
Led2 and Led3 go off and stay
off when Port 0 is in Hardware
Power-Down mode.
MII isolate and Collision are
ignored, and the Link and
Duplex status are available
and accurate.
Effect of Errata
5.0 Errata
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