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6.6.10 SerDes 2-L-PHY/4-L-PHY Electrical Characteristics

Note

The PCIe interfaces are compliant with the electrical parameters specified in PCI Express® Base

Specification Revision 4.0, September 27, 2017.

This Device imposes an additional limit on SERDES REFCLK when used in Input mode with internal

termination enabled, as described by parameter VREFCLK_TERM in Table 6-2, 4-L-PHY SERDES

REFCLK Electrical Characteristics. Internal termination is enabled by default and must be disabled

before applying a reference clock signal that exceeds the limits defined by VREFCLK_TERM. External

termination should always be enabled on the source side.

Table 6-2. 4-L-PHY SERDES REFCLK Electrical Characteristics

Only applies when internal termination is enabled. Over recommended operating conditions (unless otherwise noted)

PARAMETER

MIN

TYP

MAX

UNIT

VREFCLK_TER

Single ended voltage threshold at the reference clock

pin when internal termination is enabled

400

RTERM

Internal termination

62.5

Note

The SerDes USB interfaces are compliant with the USB3.1 SuperSpeed Transmitter and Receiver

Normative Electrical Parameters as defined in the Universal Serial Bus 3.1 Specification, Revision

1.0 , July 26, 2013.

Note

The SGMII interfaces electrical characteristics are compliant with 1000BASE-KX per IEEE802.3

Clause 70.

Note

The SGMII 2.5G / XAUI interfaces electrical characteristics are compliant with IEEE802.3 Clause 47.

Note

The QSGMII interface electrical characteristics are compliant with QSGMII Specification revision 1.2.

Note

USXGMII supports IEEE 802.3 TX and RX electrical characteristics of Clause 72-7 and Annex 69B.

IEEE 802.3 Tables 72-7 and 72-8 are not required by USXGMII since these tables are associated with

training (Clause 72-6), which is not a requirement of USXGMII.

The pre, main, and post cursors should be set by using BER sweeps.

Note

The UFS interface electrical characteristics are compliant with MIPI M-PHY Specification v3.1,

February 17, 2014.

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AM69A, AM69

SPRSP92D – FEBRUARY 2023 – REVISED DECEMBER 2024

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