LXT971ABC datasheet(64/90 Pages) INTEL

部件名	LXT971ABC

功能描述	3.3V Dual-Speed Fast Ethernet PHY Transceiver

PDF	90 Pages

Scroll/Zoom	100%

制造商	INTEL [Intel Corporation]

网页	http://www.intel.com

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64 / 90 page

LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver

Datasheet

Document #: 249414

Revision #: 002

Rev. Date: August 7, 2002

Figure 31. 100BASE-FX Transmit Timing

Table 32. 100BASE-FX Transmit Timing Parameters

Parameter

Symbol

Min

Typ1

Max

Units2

Test Conditions

TXD<3:0>, TX_EN, TX_ER setup to

TX_CLK High

–

TXD<3:0>, TX_EN, TX_ER hold from

TX_CLK High

–

TX_EN sampled to CRS asserted

–

TX_EN sampled to CRS de-asserted

–

TX_EN sampled to TPFO out (Tx

latency)

–

5.3

–

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

testing.

2. BT is the duration of one bit as transferred to and from the MAC and is the reciprocal of the bit rate.

100BASE-T bit time = 10-8 s or 10 ns.

0ns

250ns

TXCLK

TX_EN

TXD<3:0>

TPFO

CRS

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