PCI Express® Generation 4 Compliance Test Report With TMUXHS4412

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1 Introduction

The TMUXHS4412 is an analog differential passive MUX or DEMUX that works for many high-speed differential interfaces for data rates up to 20 Gbps including PCI Express® 4.0.

This document presents a test report of PCI Express® 4.0 CBB, AIC compliance test with the TMUXHS4412 by using TI's HSDC092 EVM.

2 Test Setup and Procedure

A PCI Express® 4.0 CBB, AIC compliance test is required for any device to be listed on the PCI-SIG Integrators List. This section presents the test setup and test procedure of PCI Express® 4.0 CBB, AIC compliance test. The configuration of the HSDC092 evaluation board featuring the TMUXHS4412 is also discussed.

2.1 Test Board Configuration

The HSDC092 evaluation module is used for the PCI Express® 4.0 compliance test. U1, U2, U3, and U4 are replaced with the TMUXHS4412. It features two MUXes and two DEMUXes that can extend the transmission distance of a PCIe® Gen 4 8 × bus. The EVM can be directly plugged into a PCIe® slot on a server or PC motherboard using the PCIe® Edge connector on the board and paired with a PCIe® add-in card using one of the two PCIe® connectors on the EVM.

Figure 2-1 HSDC092 Evaluation Module

Table 2-1 lists the board configuration for PCI Express® 4.0 CBB, AIC compliance test.

Table 2-1 PCI Express® 4.0 Compliance Test Configuration

SHNT#	Header	SHNT Across Pins
1	JMP7	1–2 or 2–3
2	JMP8	2–3
3	JMP1	float
4	JMP2	float
5	JMP3	float
6	JMP4	float
7	JMP5	float
8	JMP6	float
9	JMP9	float
10	JMP10	float
11	JMP11	float
12	JMP14	float

2.2 Test Setup

Figure 2-2 is the setup for PCI Express® TX CBB, AIC compliance test. The required hardware includes:

HSDC092 evaluation board
PCI-SIG CBB4 board
CPI-SIG ISI board
TekTronic DPO77002SX scope

Figure 2-2 PCI Express® 4.0 TX CBB, AIC Test Setup

2.3 Test Procedure

The following steps show the test procedure:

Configure the HSDC092 evaluation board as detailed in Table 2-1.
Plug the EVM into a PCIe® 16 × server motherboard slot. Ensure the motherboard is powered dwn before installing the EVM or configured for hot-plug operation.
Install a compatible PC Ie® endpoint card into one of the PCIe® connectors (J16) on the EVM based on configuration of the SEL pin.
Power-up the motherboard.
Run PCIe® CBB, AIC compatibility compliance test suite on the scope to check P0–P10 presets.
Attach PCIe® SIG compliance board media (ISI board) and the output of this transmission line goes to the Tek scope.
Checked Broadcom end point by itself only and ran CBB test.
Attached the same end point into J16 and performed CBB test again.