T2080NXE8MQLB View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

T2080NXE8MQLB

T2080 QorIQ integrated multicore communications processor

NXP Semiconductors. 

Electrical characteristics

Table 101. SGMII DC receiver electrical characteristics (SVDD = 1.0V)4 (continued)

Parameter

Symbol

Min

Typ

Max

Unit Notes

Receiver differential input impedance

Notes:

ZRX_DIFF

80

-

120

Ω

-

1. Input must be externally AC coupled.

2. VRX_DIFFp-p is also referred to as peak-to-peak input differential voltage.

3. The concept of this parameter is equivalent to the electrical idle detect threshold parameter in PCI Express. See PCI

Express DC physical layer receiver specifications, and PCI Express AC physical layer receiver specifications, for further

explanation.

4. For recommended operating conditions, see Table 3.

This table defines the SGMII 2.5x receiver DC electrical characteristics for 3.125 GBaud.

Table 102. SGMII 2.5x receiver DC timing specifications (SVDD = 1.0V)1

Parameter

Symbol

Min

Input differential voltage

Loss of signal threshold

Receiver differential input impedance

Notes:

VRX_DIFFp-p

VLOS

ZRX_DIFF

200

75

80

1. For recommended operating conditions, see Table 3.

Typical

-

-

-

Max

1200

200

120

Unit

mV

mV

Ω

Notes

-

-

-

3.19.9.3 SGMII AC timing specifications

This section discusses the AC timing specifications for the SGMII interface.

3.19.9.3.1 SGMII and SGMII 2.5x transmit AC timing specifications

This table provides the SGMII and SGMII 2.5x transmit AC timing specifications. A

source synchronous clock is not supported. The AC timing specifications do not include

RefClk jitter.

Table 103. SGMII transmit AC timing specifications4

Parameter

Symbol

Min

Typ

Deterministic jitter

JD

—

—

Total jitter

JT

—

—

Unit Interval: 1.25 GBaud (SGMII)

UI

800 - 100 ppm 800

Unit Interval: 3.125 GBaud (2.5x SGMII]) UI

320 - 100 ppm 320

AC coupling capacitor

Notes:

CTX

10

—

1. Each UI is 800 ps ± 100 ppm or 320 ps ± 100 ppm.

Max

Unit

0.17

UI p-p

0.35

UI p-p

800 + 100 ppm ps

320 + 100 ppm ps

200

nF

Notes

—

2

1

1

3

QorIQ T2080 Data Sheet, Rev. 3, 03/2018

138

NXP Semiconductors

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