VSC7129 datasheet(5/12 Pages) VITESSE

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Data Sheet

VSC7127/VSC7129

Family of Repeater/Retimer and Port

Bypass Circuits for Fibre Channel

G52298-0, Rev 4.3

Page 5

05/01/01

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

VITESSE

SEMICONDUCTOR CORPORATION

AC Characteristics (Over Recommended Operating Conditions)

Figure 3: Timing Waveforms

Table 1: AC Characteristics (Over recommended operating conditions)

NOTE: (1) Retimer mode is only available for Fibre Channel applications.

Parameters

Description

Min

Typ

Max

Units

Conditions

Propagation delay (Repeater mode)

7.0

Delay with all circuits bypassed.

Propagation delay (Retimer mode)

180

Delay with all circuits bypassed.

Typical delay is 100 bit times.

TR, TF

Serial data rise and fall time

300

∆V

IN minimum levels

Tj(PBC)

Data jitter accumulation

(PBC only)

120

Peak-to-peak on Ox+/- in Port

Bypass Circuit Mode.

TJ(RPTR)

Total data output jitter

(Repeater mode)

192

Jitter generation at Ox+/- when

driven by the CRU in Repeater

Mode. IEEE 802.3z Clause 38.68

TDJ(RPTR)

Serial data output deterministic jitter

(p-p) (Repeater mode)

Jitter generation at Ox+/- when

driven by the CRU in Repeater

Mode. IEEE 802.3z Clause 38.68

TJ(RTMR)

Total data output jitter

(Retimer Mode)(1)

192

Jitter generation at Ox+/- when

driven by the CRU in Retimer

Mode.

TDJ(RTMR)

Serial data output deterministic jitter

(p-p) (Retimer Mode)(1)

Jitter generation at Ox+/- when

driven by the CRU in Retimer

Mode.

TJTOL

Jitter tolerance

0.24

Minimum eye opening for proper

operation as defined in MJS 8.0.

Ox+/-

Ix+/-

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