DNC3X3825 datasheet(8/32 Pages) AGERE

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DNC3X3825

Advance Data Sheet

Octal 10/100 Mbits/s Ethernet Transceiver Macrocell

March 2000

Signal Information (continued)

LEDs operate as follows:

LED_STR_EN = 0, LED_BLINK_EN = 0 => No stretching/blinking.

LED_STR_EN = 1, LED_BLINK_EN = 0 => Stretch to 42 ms, minimum.

LED_STR_EN = 0, LED_BLINK_EN = 1 => Every activity causes 42 mS ON, 42 mS OFF blink.

LED_STR_EN = 1, LED_BLINK_EN = 1 => Every activity causes 0.5 second ON, 0.5 second OFF blink.

Table 4. Status Signals

Signal

Type

Name/Description

XS[7:0]

Transmit Status. This signal indicates transmit activity. This output can be

stretched or blinked per the description given above.

RS[7:0]

Receive Status. This signal indicates receive activity. This output can be

stretched or blinked per the description given above.

CS[7:0]

Collision Status. This signal indicates collision occurrence. This output can

be stretched or blinked per the description given above.

LS10_OK[7:0]

Link10. This signal indicates good link status for 10 Mbits/s.

LS100_OK[7:0]

Link100. This signal indicates good link status for 100 Mbits/s.

LS_OK[7:0]

Link Status. Indicates link status.

FDUP_OUT[7:0]

Full-Duplex Status. If this signal is high, it indicates full-duplex link, and if it is

low, then the link is half duplex.

TPJS[7:0]

Jabber Status. Indicates that there is a jabber condition (only in 10 Mbits/s).

TPAPS[7:0]

TP Autopolarity Status. Indicates if autopolarity has been detected and

corrected.

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