VSC7440 datasheet(401/444 Pages) MICROSEMI

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Electrical Specifications

VMDS-10492 VSC7440 Datasheet Revision 4.2

384

The specifications in the following table correspond to 10G transmitter output, SFI point B, and an

SFF-8431 compliant SFI channel with no more than 3 dB channel loss.

Total jitter

tolerance1

TJT

0.749

Measured according to

IEEE 802.3 Clause 38.5.

Deterministic

jitter1

0.462

Measured according to

IEEE 802.3 Clause 38.5.

Jitter tolerance,

duty cycle

distortion

DCD

1.4

nsP-P 100BASE-FX.

Measured according to

ISO/IEC 9314-3:1990.

Jitter tolerance,

data-dependent

jitter

DDJ

2.2

nsP-P 100BASE-FX.

Measured according to

ISO/IEC 9314-3:1990.

Jitter tolerance,

random jitter

2.27

nsP-P 100BASE-FX.

Measured according to

ISO/IEC 9314-3:1990.

Wideband SyncE

jitter tolerance

WJT

312.5

UIP-P 10 Hz to 12.1 Hz.

Measured according to ITU-T

G.8262, section 9.2.

Wideband SyncE

jitter tolerance

WJT

3750/ƒ

UIP-P 12.1 Hz to 2.5 kHz.

Measured according to ITU-T

G.8262, section 9.2.

Wideband SyncE

jitter tolerance

WJT

1.5

UIP-P 2.5 kHz to 50 kHz.

Measured according to ITU-T

G.8262, section 9.2.

Eye mask

0.35

UIP-P

Eye mask

125

Eye mask

600

Jitter requirements represent high-frequency jitter (above 637 kHz) and not low-frequency jitter or wander.

Table 299 •

10G Transmitter Output (SFI Point B, Host)

Parameter

Symbol Minimum

Maximum

Unit

Condition

Termination mismatch

ΔZM

AC common-mode voltage

VOCM_AC

mVRMS

Total jitter

0.281

Measured at point B, as specified

in SFF-8431 revision 4.1

Data-dependant jitter

DDJ

0.11

Measured at point B, as specified

in SFF-8431 revision 4.1.

Pulse shrinkage jitter

DDPWS

0.0551

UIRMS Measured at point B, as specified

in SFF-8431 revision 4.1.

3 dB channel loss.

Uncorrelated jitter

0.0231

UIRMS Measured at point B, as specified

in SFF-8431 revision 4.1.

Wideband SyncE jitter

TWJ

0.5

UIP-P

Measured according to ITU-T

G.8262 section 8.3.

Table 298 •

100BASE-FX, SGMII, SFP, 2.5G, 1000BASE-KX Receiver (continued)

Parameter

Symbol Minimum

Typical

Maximum

Unit

Condition

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