Keysight Technologies W3301A User manual

Keysight W3301A LPDDR3
BGA Interposers
Installation Guide

2Keysight W3301A LPDDR3 BGA Interposers Installation Guide
Notices
© Keysight Technologies 2016
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Manual Part Number
W3301-97000
Edition
First Edition, October 2016
Available in electronic format only
Keysight Technologies
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Colorado Springs, CO 80907 USA
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WARNING notice until the indicated
conditions are fully understood and
met.

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 3
In This Guide
This guide provides information on how to set up and use the following Keysight products in a
LPDDR3 probing setup:
• W3301A LPDDR3 178-ball, BGA Interposer
• E5406A/B Pro Series Soft Touch Connectorless Single-ended Probes
• U4201A 90-pin Cable Connectors (connects to the E5406A/B probes and Logic analyzer)

4Keysight W3301A LPDDR3 BGA Interposers Installation Guide

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 5
Contents
In This Guide 3
1 Introduction to W3301A Interposers
W3301A LPDDR3 BGA Interposers - An Overview 8
Compatibility with Logic Analyzer Modules 9
Software Configuration 9
W3301A Technical Features Summary 9
W3301A Riser 9
E5406A/B Pro Series Soft Touch Connectorless Single-ended Probes 11
U4201A 90-pin Logic Analyzer Cable 12
Hard ware and Software Requirements 13
Mechanical Considerations 15
W3301A Interposer Dimensions 15
W3301A Riser Dimensions 16
W3301A Keep-Out Volume 16
2 W3301A Interposer and Riser Soldering Guidelines
Recommended Soldering Guidelines 21
Soldering Steps 22
Interposer Fabrication Notes 23
3 Setting up the W3301A Interposer
W3301A Interposer Setup - Overview 26
Step 1 - Soldering the W3301A Interposer 27
Step 2 - Connecting the W3301A Interposer to E5406A/B Probes 28
Step 3 - Connecting the E5408A/B Probe Pods to the U4201A Logic Analyzer Cable
Pods 30
Step 4 - Connecting the U4201A Cables to Logic Analyzer Module Pods 31
W3301A Interposer Connectorless Footprints Pinout 33
Logic Analyzer Channels to Signals Mapping 34
Signals not probed by the Logic Analyzer 35

6Keysight W3301A LPDDR3 BGA Interposers Installation Guide
Contents
4 Setting Up the Logic Analyzer for W3301A Interposers
Before You Start 38
Loading a Configuration File 39
To save a configuration file 39
5 Characteristics, Regulatory, Safety and Storage Information
Operating Characteristics 42
Storage, Inspection, and Baking Guidelines 43
Guidelines for Shelf Life and Solder-ability of W3301A Interposers 43
Regulatory Notices 44
WEEE Compliance 44
China RoHS 44
Index

Keysight W3301A LPDDR3 BGA Interposers
Installation Guide
1Introduction to W3301A Inter-
posers
W3301A LPDDR3 BGA Interposers - An Overview / 8
E5406A/B Pro Series Soft Touch Connectorless Single-ended Probes / 11
U4201A 90-pin Logic Analyzer Cable / 12
Hardware and Software Requirements / 13
Mechanical Considerations / 15
This chapter introduces the hardware components that are needed for a W3301A LPDDR3 BGA
interposer setup. It also lists the software requirements as well as describes the mechanical
considerations such as various dimensions and KOV that you should know before you start setting up
and using this interposer.

1 Introduction
8Keysight W3301A LPDDR3 BGA Interposers Installation Guide
W3301A LPDDR3 BGA Interposers - An Overview
The W3301A LPDDR3 BGA Interposer enables probing of 178-pin JEDEC standard footprint directly
at the ball grid array using the Keysight logic analyzers.
This interposer supports:
• probing of all CA and DQ/DQS signals between a single-channel x32 DRAM and a PC board.
• data rates up to 1.6 Gb/s
•smallerKOV
Using this interposer, you can capture LPDDR3 signals up to 1.6 Gb/s for a system under test that
can operate under probe load.
A W3301A interposer interposes between the DRAM being probed and the PC board where the
DRAM would normally be soldered. The interposer is designed to be soldered to the PCB footprint for
the DRAM on top of either the LPDDR riser included with the W3301A interposer or an optional
Grypper socket (not included with the interposer) or both. The DRAM being probed is then soldered
to the top side of the interposer.
Each LPDDR signal in the common footprint passes directly from the bottom side of the interposer to
the top side of the interposer.
The following figure shows a W3301A interposer’s top view.
Figure 1 W3301A LPDDR3 Interposer
NOTE
The W3301A interposer is tested for via connections through the interposer.

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 9
Introduction 1
The W3301A interposer has two connectorless footprints, J1 and J2 on its top side. A retention
module (shipped with the E5406A/B Soft Touch Series Connectorless probe) is soldered to each
footprint. Each retention module attaches to an E5406A/B probe. These probes are then connected
to the U4201A Logic Analyzer 90-pin cable connectors which then connect to the Logic Analyzer
module’s pods.
Compatibility with Logic Analyzer Modules
The W3301A interposers are compatible with the following Keysight logic analyzer modules.
• U4164A AXIe-based logic analyzer modules
• U4154A/B AXIe-based logic analyzer modules
Software Configuration
The W3301A interposer can be used in the following logic analyzer software configuration:
• State mode under 2500 Mb/s (double edge clocking and dual sampling mode)
You can use the W3301A interposer with the compatible logic analyzer module’s dual clock edge
clocking and dual sample mode. The U4164A module’s dual sampling with dual thresholds allows
you to capture separate Read and Write samples per clock edge.
W3301A Technical Features Summary
• Probes a JEDEC LPDDR3 BGA 178 ball standard footprint. Maximum of 11 mm wide X 11.5 mm
long LPDDR3 DRAM package can fit on top of the W3301A interposer without an additional riser
or a socket to provide clearance for the RC components. A 13 mm wide X 13.5 mm long LPDDR3
DRAM package can also fit without a riser but will cover the silk screen marking and overlap vias
slightly.
• Logic analyzer connections are made using E5406A/B Pro Series Soft Touch Connectorless
Single-ended probes and U4201A logic analyzer cables. The E5406A/B probes attach to the
connectorless footprints on the top of the W3301A interposer using retention modules.
• An isolation Tip Resistor (100 Ohms) for each signal probed by the Logic Analyzer is present on
the top of the W3301A interposer. No RC network present on the E5406A/B probes or on the top
or bottom of the interposer.
W3301A Riser
An LPDDR3 BGA 178 ball riser is provided with each W3301A interposer to allow the interposer to
clear surrounding devices. Optionally, you can use a Grypper socket. It is not provided with the
interposer.
The following figure displays the riser that is provided with the W3301A interposer.
Figure 2 Riser that accompanies the W3301A interposer

1 Introduction
10 Keysight W3301A LPDDR3 BGA Interposers Installation Guide
To know how to solder the riser to the W3301A interposer and PC board, refer to the chapter
“W3301A Interposer and Riser Soldering Guidelines" on page 19.
NOTE
The LPDDR3 178 ball riser includes ground planes for optimal signal integrity. Due to these
ground planes, the riser’s alignment with the DRAM should be such that the TOP side of the
riser must point towards the DRAM and the Pin 1 indicator on the riser must orient towards the
“A1” pin of the DRAM.

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 11
Introduction 1
E5406A/B Pro Series Soft Touch Connectorless Single-ended Probes
The E5406A/B-pro series soft touch probes are ultra-low-load connector-less probes.
This probe attaches to a connectorless footprint on the top-side of the W3301A interposer using a
retention module soldered to this footprint. The retention module ensures pin-to-pad alignment and
holds the probe in place. On the other end, the probe connects to a U4201A logic analyzer cable that
connects it to a logic analyzer module’s pod.
Figure 3 E5406A Probe
To know how to connect a W3301A interposer to an E5406A/B probe, refer to the following topics in
this guide:
•“Step 2 - Connecting the W3301A Interposer to E5406A/B Probes" on page 28
•“Step 3 - Connecting the E5408A/B Probe Pods to the U4201A Logic Analyzer Cable Pods" on
page 30
To get information such as equivalent probe loads, input impedance, time domain transmission
(TDT), step inputs, eye opening, pinout, safety information, and dimensions of the E5406A/B probes,
refer to the E5400-Pro Series Soft Touch Connectorless Probes User's Guide (part number
E5404-97007) available on www.keysight.com.
Connects to the
E5403A retention
module soldered on
the J1 / J2
connectorless
footrpints on top of the
W3301A interposer
Odd and Even pods to
connect to the U4201A
Logic Analyzer cable
pods
NOTE
The probe uses a “top-side” mountable retention module. A kit of five
retention modules is shipped with each E5406A/B probe.
You can order additional kits using the Keysight part number - E5403A.

1 Introduction
12 Keysight W3301A LPDDR3 BGA Interposers Installation Guide
U4201A 90-pin Logic Analyzer Cable
The U4201A logic analyzer cable connects an E5406A/B probe to a pod of a compatible Keysight
AXIe-based logic analyzer module.
Figure 4 U4201A 90-pin logic analyzer cable
To know how to make connections of this cable with the E5406A/B probe and logic analyzer module,
refer to the following topics:
•“Step 3 - Connecting the E5408A/B Probe Pods to the U4201A Logic Analyzer Cable Pods" on
page 30
•“Step 4 - Connecting the U4201A Cables to Logic Analyzer Module Pods" on page 31
To get information such as the characteristics, specifications, safety information, and dimensions of
the U4201A cable, refer to the Keysight U4200A-Series Probes and Cables User Guide (part number
U4200-97000) available on www.keysight.com.
Connects to a pod of an AXIe based
Logic Analyzer module
Odd and Even pods to connect to
pods of the E5406A/B probe

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 13
Introduction 1
Hardware and Software Requirements
Before you start installing the W3301A interposer, ensure that you have the following list of hardware
and software components needed for this interposer.
Hard ware Requirements
U4164A or U4154A/B AXIe-based Logic Analyzer Module
M9502A 2-slot or M9505A 5-slot AXIe chassis to install the logic analyzer module
M9536A embedded controller or host PC with PCI express adapter card for the chassis
W3301A LPDDR3 Interposer(s)
E5406A/B probes (with retention modules) to connect the interposer to the logic analyzer cables
Two probes needed for each interposer. The probes are sold separately from the interposer.
U4201A Logic Analyzer cables to connect the E5406A/B probes to the Logic Analyzer module
Two cables needed for each E5406A/B probe.
Software Requirements Licensing Description
Logic and Protocol Analyzer software version 6.30 or
higher.
(Required)
Unlicensed base software with
additional licensing options
Base software platform for configuring and using Keysight’s logic
analyzer modules.
B4661A Memory Analysis Software Tools Package
version 6.30.1008 or higher. (Required)
Includes unlicensed as well as
licensed features
Base software package that includes configuration files and tools
to help you perform DDR/LPDDR post-process as well as
real-time protocol compliance violation testing, decode and view
memory transactions, and set up your logic analyzer for
DDR/LPDDR data capture and analysis.
The below-mentioned licensed/unlicensed software features from the B4661A software package are required for W3301A.
Default LPDDR configuration files
(Required)
Available as an unlicensed standard
feature with the B4661A package.
Includes default XML configuration files for use with the W3301A
interposer.
DDR Setup Assistant and DDR Eyefinder software
(Required)
Available as an unlicensed standard
feature with the B4661A package.
A wizard- like application to help you set up your U4164A logic
analyzer properly for use with the W3300A interposers.
DDR Custom Configuration Creator Tool
(Required)
Available as an unlicensed standard
feature with the B4661A package.
Allows you to define the footprint layout as per your custom
probing solution used in the DDR/LPDDR setup and then create
an XML configuration file based on this footprint information.
B4661A-2FP LPDDR Bus Decoder software
(Recommended)
Available as a licensed feature with
the B4661A package
Allows you to decode and view transactions, commands, and
data from a LPDDR1, LPDDR2, LPDDR3 or LPDDR4 SDRAM
memory bus in your device under test.
B4661A-3FP DDR 2/3/4 Protocol Compliance and
Analysis toolset
(Recommended)
Available as a licensed feature with
the B4661A package
A set of tools to:
•evaluate and analyze the captured LPDDR data.
•perform real-time or post process compliance.
•set up a trigger on the specified address.
•graphically profile the distribution of memory accesses.
B4661A-4FP DDR 2/3/4 Memory Analysis Viewer
(Recommended)
Available as a licensed feature with
the B4661A package
A viewer installed and displayed within the Logic and Protocol
Analyzer GUI to analyze:
•memory traffic statistics.
•refresh rate and self-refresh periods.
•distribution of memory accesses.
•memory performance measurements.

1 Introduction
14 Keysight W3301A LPDDR3 BGA Interposers Installation Guide
The following table displays the number of W3301A interposers and cables required to provide
connections to channels of your logic analyzer module.
NOTE
You can install the above-mentioned software components by downloading the required
executables from the Keysight web site at: www.keysight.com/find/lpa-sw-download.
DRAM Data Width Access to Number of
Interposers
Number of Probes Number of Logic
Analyzer cables
Number of Logic
Analyzer Mod ules
LPDDR3 178
ball DRAM used
as a single
32-bit channel
device
Dual bank 16
bit
•Ck_A
•All Channel A CA and control
signals for Bank 0 and Bank 1
•All DQS and DQ signals from
all byte lanes.
One W3301A Two E5406A/B, one
each for the J1 and
J2 connectorless
footprints of the
interposer
Four cables for a
W3301A
interposer.
(Two cables per
E5406A/B probe
used in the setup)
One U4164A/
U4154A/B module

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 15
Introduction 1
Mechanical Considerations
W3301A Interposer Dimensions
The following figure shows the dimensions of a W3301A LPDDR3 BGA interposer.
Figure 5 Dimensions of a W3301A interposer (Top View)

1 Introduction
16 Keysight W3301A LPDDR3 BGA Interposers Installation Guide
W3301A Riser Dimensions
W3301A Keep-Out Volume
NOTE
You must install the W3301A interposer on a riser (shipped with the interposer) or a grypper
socket to provide clearance to surrounding DRAM.

Keysight W3301A LPDDR3 BGA Interposers Installation Guide 17
Introduction 1
Figure 6 KOV of a W3301A interposer

1 Introduction
18 Keysight W3301A LPDDR3 BGA Interposers Installation Guide

Keysight W3301A LPDDR3 BGA Interposers
Installation Guide
2W3301A Interposer and Riser
Soldering Guidelines
Recommended Soldering Guidelines / 21
Soldering Steps / 22
Interposer Fabrication Notes / 23
In this chapter, Keysight provides the soldering guidelines and information for W3301A interposer
installation. However, Keysight cannot guarantee the successful interposer installation due to
variations in processes and equipment used at individual BGA rework facilities.
Keysight recommends that interposers be installed by companies with specific expertise in this
advanced type of processing.
Keysight does not endorse any specific BGA rework facility but recommends using a reputable and
experienced BGA rework facility for the installation of BGA interposers. The following links are
provided as a convenience to users investigating BGA rework facilities.
Information on BGA Rework Facilities
Circuit Technology Center
Haverhill, MA
USA
BGA Rework and Repair Services
http://www.circuitrework.com/services/bga.shtml
Keysight Technologies Adapter Rework
http://www.circuitrework.com/features/671.shtml
eTech
Round Rock, TX
www.eTech-WEB.com
Singularity Electronic Systems
Portsmouth, NH
www.singularitysys.com
Recommended Read ing
BGA Component Rework Procedures
http://www.circuitrework.com/guides/9-0.shtml
BGA Component Rework Process Flow
http://www.circuitrework.com/guides/9-1-1.shtml
BGA Component Rework Inspection
http://www.circuitrework.com/guides/9-1-2.shtml
BGA Component Rework Profile Development, Standard Method
http://www.circuitrework.com/guides/9-2-1.shtml

2 W3301A Interposer and Riser Soldering Guidelines
20 Keysight W3301A LPDDR3 BGA Interposers Installation Guide
BGA Component Rework Profile Development, Smart Track Method
http://www.circuitrework.com/guides/9-2-2.shtml
BGA Component Rework, Eutectic Solder Ball
http://www.circuitrework.com/guides/9-3-1.shtml
BGA Component Reballing, Fixture Method
http://www.circuitrework.com/guides/9-4-1.shtml
Recommended Read ing