TSI721 datasheet(53/68 Pages) IDT

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3. Electrical Characteristics > AC Timing Specifications

Tsi721 Datasheet

May 5, 2014

Formal Status

This document is confidential and is subject to an NDA.

Integrated Device Technology

1. The transmitter must be able to produce a minimum T_Vdiff greater than or equal to 800mVppd. In applications where the

channel is better than the worst case allowed, a Transmitter device can be provisioned to produce T_Vdiff less than this

minimum value, but greater than or equal to 400mVppd, and is still compliant with this specification.

2. Load Type 0 with min T_Vdiff, AC-Coupling or floating load.

3. For load Type 1: R_Zvtt < 30 Ohm; T_Vtt and R_Vtt = 1.2V +5% / - 8%.

4. DC coupling compliance is optional (Load Type 1). Only Transmitters that support DC coupling are required to meet this

parameter.

For 5 Gbps links, the Transmitters eye mask will also be evaluated during the steady-state where there are no symbol

transitions – for example, a 1 followed by a 1 or a 0 followed by a 0 – and the signal has been de-emphasized. This additional

transmitter eye mask constraint is displayed in the following figure.

Figure 10: Transition and Steady State Symbol Eye Mask

Output common mode voltage

T_Vcm

Load Type

Section

8.5.3

100

1700

Load Type

13,4

Section

8.5.3

630

1100

Table 27: Level II Medium Run Transmitter Output Electrical Specifications (Continued)

Characteristic

Symbol

Reference

Minimum

Typical

Maximum

Units

TSI721 Datasheet(PDF) 53 Page - Integrated Device Technology