onsemi NB7NPQ1102MAMTGEVB Evaluation Board User Manual

: June 12, 2024
: onsemi

Table of Contents

Introduction
Features
Part Description
BOARD MAP AND FUNCTIONAL SUMMARY
Select Power Sourc
USB 2.0 Data Lines
COMPLETE BOARD SCHEMATICS
BILL OF MATERIALS
- ADDITIONAL INFORMATION
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onsemi NB7NPQ1102MAMTGEVB Evaluation Board User Manual

Introduction

The NB7NPQ1102MAMTGEVB evaluation board was developed to provide a convenient platform to quickly verify the operation of the NB7NPQ1102M redriver in a USB type−A system environment.

This evaluation board manual contains:

Information on the NB7NPQ1102M Evaluation Board
Board Schematics
Bill of Materials

Features

Accommodates the Functional Evaluation of the NB7NPQ1102M
Acts as a Reference Design that can Easily be Modified for Active Cables, UFP (Upstream Facing Port), DFP (Downstream Facing Port), and DRP (Dual Role Port) Applications
Type−A Plug and Receptacle to Easily Place in the Existing System Environment
On Board Control Pins for Adjusting Settings without Compromising Form Factor

Part Description

The NB7NPQ1102M is a 3.3 V dual channel, linear redriver for USB 3.1 applications that supports both 5 and 10 Gbps data rates. Signal integrity degrades from PCB traces and transmission cables which may cause inter symbol interference (ISI). The NB7NPQ1102M compensates for these losses by engaging varying levels of equalization at the input receiver. The output transmitter circuitry provides user selectable flat gain settings to create the best eye openings for the outgoing data signals. The flexibility of this part allows it to fit into many system applications.

\After power up, the NB7NPQ1102M periodically checks both of the TX output pairs for a Super Speed USB receiver. When the receiver is detected, the RX termination becomes enabled and the NB7NPQ1102M is set to perform the redriver function.

The NB7NPQ1102M comes in a small 2.5 mm x 4.5 mm WQFN30 package and is specified to operate across the entire industrial temperature range, −40°C to +85°C.

This manual should be used in conjunction with the device datasheet which contains full technical details on the device specifications and operation.

Figure 1. NB7NPQ1102M Demo Board (Top View)

Figure 2. NB7NPQ1102M Demo Board (Bottom View)

BOARD MAP AND FUNCTIONAL SUMMARY

Figure 3. NB7NPQ1102M Evaluation Board (Top View)

Figure 4. NB7NPQ1102M Evaluation Board (Bottom View)

Table 1. NB7NPQ1102M Evaluation Board − Jumper vs Control Pin Selection

Jumper	Control Pin
J2	RXDET_EN
J3	SWB
J4	FGB
J5	EQB
J7	EQA
J8	FGA
J9	SWA
J10	EN
J11	VBUS to VIN of LDO
J12	3.3V LDO to DUT
J15	LDO Shut Down (Low)

Select Power Sourc

The NB7NPQ1102MAMTGEVB has the flexibility to be powered through USB’s VBUS, or an external power supply. Table 2 and Figure 5 describe the jumper settings for each of the configuration.

USB 2.0 Data Lines

The USB 2.0 lines can be disconnected by removing the 0 resistors R2 and R3 on the D+ and D− lines. This is useful if you cannot easily tell whether the downstream facing port has acknowledged a super speed (+) connection with the inserted loss, or if it stepped down to high speed data rates. When a receiver is detected through RxDetect, the DFP will initialize link training. It will send a test signal out at the highest data rate and expect to see the same signal sent back by the UFP. If the signals do not match due to ISI (or any other connection issues) then it will drop down the data rate to USB 2.0 speeds.

On Windows machines, an easy way to tell that a super speed connection was not established is to look for a pop up in the task bar letting the user know that “This device can perform faster”. A disk benchmarking tool like Crystal Disk Mark that lets you test read and write speeds to a peripheral storage can also be used.

Figure 5. Power Source Selection

Table 2. SELECTING A POWER SOURCE

USB VBUS	Place jumper on J11 and a Jumper on J12
EXTERNAL SUPPLY	Open J11 and connect positive lead of external supply to VDD

and apply 3.3 V. Ensure that GND is connected to ground and that current limit is set to 200 mA.

COMPLETE BOARD SCHEMATICS

Figure 6. NB7NPQ1102M USB Type−A Evaluation Board Schematics

BILL OF MATERIALS

Table 3. BILL OF MATERIALS

Qty| Description| Reference| Manufacturer| Manufacturer PN
---|---|---|---|---
1| USB 3.1 Redriver| U1| onsemi| NB7NPQ1102MMUTXG
1| USB Type−A Receptacle| CN1| Amphenol Commercial Products| GSB4111312HR
1| USB Type−A Plug| CN2| Amphenol Commercial Products| GSB416445CHR
2| Capacitor 1 µF (0603)| C8, C9| Samsung| CL10A105KA5LNNC
4| Capacitor 0.22 µF (0402)| C16, C17, C20, C21| TDK| C1005X5R1C224M050BB
4| Capacitor 0.33 µF (0402)| C11, C12, C18, C19| TDK| C1005X5R1C334M050BB
1| Blue LED| D2| Rohm Semiconductor| SMLE12BC7TT86
8| Header, 0.100 Ω| J1| Amphenol FCI| 68001 203HLF
10| Header, 0.100 Ω| J2, J3, J4, J5, J7, J8, J9, J10, J11, J12, J15| Samtec Inc| TSW 150 14 G S
2| Resistor 0.0 Ω (0402)| R2, R3| Yageo| RC0402JR−070RL
6| Resistor 68 kΩ (0402)| R4, R5, R8, R9, R10, R17| Panasonic| ERJ−2RKF6802X
1| Resistor 1 kΩ (0402)| R21| Panasonic| ERJ−2RKF1001X
2| TEST POINT| TP1, TP2| |
2| Resistor 220 kΩ (0402)| R22, R23| Panasonic|
1| 3.3 V Voltage Regulator| U3| onsemi| NCP3335ADM330R2G
6| Capacitor 0.1 µF (0402)| C1, C2, C3, C4, C5, C6| TDK| C1005X5R1H104K050BB

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