10HSI-S008-R0-C datasheet(37/71 Pages) HIROSE

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Signal Integrity Report – IT3 (32mm)

Page 37

Base Case 1 does not include crosstalk effects and Base Case 2 includes crosstalk of the channel

model without the connector.

Figure 64 - Figure 66 show the eye diagrams at receiver inputs for various data rates (3.125, 5

6.25 and 10Gbps) with via transition in the 16th PCB routing layer and with 14 FEXT.

The full IT3 channel model (raw data with connector), Base Case 1 (data without connector and

vias) and Base Case 2 (data without connector only) are portrayed in Figure 63.

Table 13 and Table 14 summarize the corresponding results for the eye diagram and their

comparison with Base Case 1 and Base Case 2. Column ΔIT3 is the timing jitter or voltage loss

caused by the IT3 connector (with and without vias).

Figure 63 Channel models used for eye diagram simulations

Data Rate

(Gbps)

PRE-

CURSOR[1]

MAIN

CURSOR

POST-

CURSOR[1]

3.125

-----

0.9056

-0.0944

-----

0.8747

-0.1253

6.25

-0.0359

0.8278

-0.1363

-0.0694

0.7635

-0.1670

Table 10 Base case 1: optimum tap setting coefficients for center pair 8 of IT3-32mm connector

Data Rate

(Gbps)

PRE-

CURSOR[1]

MAIN

CURSOR

POST-

CURSOR[1]

3.125

-----

0.8939

-0.1061

-----

0.8611

-0.1389

6.25

-0.0435

0.8099

-0.1466

-0.0826

0.7424

-0.1751

Table 11 Base case 2: optimum tap setting coefficients for center pair 8 of IT3-32mm connector

10HSI-S008-R0-C Datasheet(PDF) 37 Page - Hirose Electric

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