LXT971ABC datasheet(67/90 Pages) INTEL

Part #	LXT971ABC

Description	3.3V Dual-Speed Fast Ethernet PHY Transceiver

PDF	90 Pages

Scroll/Zoom	100%

Manufacturer	INTEL [Intel Corporation]

Direct Link	http://www.intel.com

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67 / 90 page

LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver

Datasheet

Document #: 249414

Revision #: 002

Rev. Date: August 7, 2002

Figure 34. 10BASE-T Jabber and Unjabber Timing

Table 35. 10BASE-T Jabber and Unjabber Timing Parameters

Parameter

Symbol

Min

Typ1

Max

Units

Test Conditions

Maximum transmit time

–

150

–

Unjab time

250

–

750

–

1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production

testing.

Figure 35. 10BASE-T SQE (Heartbeat) Timing

Table 36. 10BASE-T SQE Timing Parameters

Parameter

Symbol

Min

Typ1

Max

Units

Test Conditions

COL (SQE) Delay after TX_EN off

0.65

–

1.6

–

COL (SQE) Pulse duration

0.5

–

1.5

–

1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production

testing.

TXD

COL

TX_EN

TX_CLK

TX_EN

COL

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