Achronix Speedster22i SerDes Manual do Utilizador descarregar pdf (Página 106)

Parameter

Description

Min

Typical

Max

Unit

ZTX-DIFF-HIZ

Transmitter Output Differential DC

Impedance in Squelch Mode

>2k

Ω

ZTX-CM-HIZ

Transmitter Output Common-Mode

DC Impedance in Squelch Mode

>500

Ω

Transmitter Return Loss

ZRL-DIFF-DC

Transmitter Differential DC Return

Loss

-14 dB

ZRL-DIFF-NYQ

Transmitter Differential Return Loss

at Nyquist Frequency (F

BAUD

/2)

-6 dB

ZRL-CM-DC

Transmitter Common-Mode DC

Return Loss

-6 dB

ZRL-CM-NYQ

Transmitter Common-Mode Return

Loss at Nyquist Frequency (F

BAUD

)

-4 dB

Electrical Idle

TX-IDLE

Idle Output Voltage

pkpk

CM-DELTA-

SQUELCH

Maximum Common-Mode Step

Entering/Exiting Squelch Mode

50 mV

TX-IDLE-

LATENCY

Latency Entering/Exiting Idle 8 ns

Receiver Detect

VTX-RCV-DETECT

Voltage change allowed during

receiver detection

600 mV

Table 24: Jitter

Standard Total Jitter (TJ)

Deterministic

Jitter (DJ)

Units Compliant?

PCI Express

Gen1/Gen2/Gen3

0.25 0.15

p-p

Yes

GigE – SGMII 0.375 0.125 UIp-p Yes

10G Ethernet – XAUI 0.35 0.17 UIp-p Yes

CEI 6G – SR/LR 0.3 0.15 UIp-p Yes

CEI 11G – SR/MR/LR 0.3 0.15 UIp-p Yes

Fibre Channel (FC-1, FC-

2, FC-4, FC-8)

0.24 0.12 UI

p-p Yes

SATA (Gen1, Gen2) 0.37 0.15 UIp-p Yes

106 UG028, July 1, 2014

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