VSC8504-02 datasheet(110/131 Pages) MICROSEMI

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Electrical Specifications

VMDS-10507 VSC8504-02 Datasheet Revision 4.2

5.2.7.2

Enhanced SerDes Driver Jitter Characteristics

The following table lists the jitter characteristics for the enhanced SerDes driver in QSGMII mode. For

information about jitter characteristics for the enhanced SerDes driver in SGMII mode, see Table 110,

page 97.

5.2.7.3

Enhanced SerDes Inputs

The following table lists the AC specifications for the enhanced SerDes inputs in SGMII mode.

The following table lists the AC specifications for the enhanced SerDes inputs in QSGMII mode.

Eye mask Y1

T_Y1

200

Eye mask Y2

T_Y2

450

Table 115 •

Enhanced SerDes Driver Jitter Characteristics, QSGMII Mode

Parameter

Symbol Maximum

Unit Condition

Total output jitter

TJO

Measured according to

IEEE 802.3.38.5.

Deterministic output jitter

DJO

Measured according to

IEEE 802.3.38.5.

Table 116 •

Enhanced SerDes Input AC Specifications, SGMII Mode

Parameter

Symbol Minimum

Unit Condition

Unit interval, 1.25G

800 ps

Differential input return loss,

50 MHz to 625 MHz

RLI_DIFF 10

RL =100 Ω ±1%

Common-mode input return loss,

50 MHz to 625 MHz

RLICM

6dB

Table 117 •

Enhanced SerDes Inputs AC Specifications, QSGMII Mode

Parameter

Symbol Minimum

Maximum

Unit Condition

Unit interval, 5G

200 ps

Differential input return loss,

100 MHz to 2.5 GHz

RLI_DIFF 8dB

RL =100 Ω ±1%

Differential input return loss,

2.5GHz to 5GHz

RLI_DIFF 8 dB – 16.6 log

(ƒ/2.5 GHz)

RL =100 Ω ±1%

Common-mode input return

loss, 100 MHz to 2.5 GHz

RLICM

6dB

Eye mask X1

R_X1

0.3

Eye mask Y1

R_Y1

Eye mask Y2

R_Y2

450

Table 114 •

Enhanced SerDes Outputs AC Specifications, QSGMII Mode

Parameter

Symbol

Minimum

Maximum

Unit Condition

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