© VITESSE SEMICONDUCTOR CORPORATION

Page 19

8/28/00

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7146

2.5Gb/s, 20-Bit Transceiver

G52162-0, Rev. 2.7

Revision History:

1.0 Initial Release

1.1 Fix Fig 5, Add Figure 10, New numbers for Power Supply, Dissipation, Zi/Zo/Ri/Ro & Termination.

1.3 Filled in TBA’s, package pinout, pin description, dual-mode description. For internal CDR.

2.0 Post CDR. Rev.A target spec.

2.1 Pre-CDR. Rev. B target spec.

2.2 Post-CDR. Rev. B API. Removed reliability table. Changed BCLK name to TBC.

2.2.1 Removed 50 ohm termination wording in table on page 10.

2.3 Modified title and features section to reflect dual speed.

2.4 Added facility loop-back (SLOOP) and speed negotiation port (TXRATE, RXRATE, BCMN) features.

Modified pinout list and diagram accordingly.

Modified spec as per ICR results.

Changed package type from QZ to RH.

2.5 Removed facility loop-back (SLOOP) feature. Changed pin# 80 from SLOOP to TEST4.

Modified Figures 2 and 3 to better reflect RBCN relationship with output data R[0:19].

Modified RBCN vs. R bus timing as per characterization findings.

2.6 Revised max Idd to 750 ma, max power to 2.6 W; Modified ESD rating on p.10; removed “Vitesse

Confidential”

2.7Added typ column to Table 3: TRJ:added typ 5 ps, changed max from 5ps to 7.5ps; TDJ: added typ

25ps. Corrected grammatical/typo errors and corrected inconsistencies. Updated format. Removed marking

information.