VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7146

2.5Gb/s, 20-Bit Transceiver

Page 4

© VITESSE SEMICONDUCTOR CORPORATION

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

8/28/00

G52162-0 Rev. 2.7

Figure 2: Detection of a Properly Aligned “Comma” Character

Figure 3: Detection and Resynchronization of an Improperly Aligned “Comma” Character

TChar: 10 bit Transmission Character

COM_DET

R[0:9]

RBCN

K28.5

TChar

TChar

TChar

R[10:19]

TChar

TChar

TChar

TChar

COM_DET

K28.5

TChar

TChar

TChar

K28.5

TChar

Potentially Corrupted

R[0:9]

RBCN

TChar

TChar

TChar

TChar

TChar

TChar

R[10:19]

Receiving Two Consecutive K28.5+TChar Transmission Words