Page 1 Keysight W5643A DDR5 & W4640 / 30 Series DDR4 BGA Interposers INSTALLATION GUIDE...
Page 2 12.211 and 27.404.2 and DFARS 227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR 227.7103-5 (c), as applicable in any technical data. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 3: In This Guide
In This Guide This guide provides installation and usage information for the following Keysight DDR5 and DDR4 BGA interposers and the cables used with these interposers. W5643A DDR5 78-ball DRAM BGA Interposer and Cables • W5643A DDR5 x4/x8 BGA 2-Wings Interposer •...
Page 4 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 5: Table Of Contents
W4636A DDR4 x16 KOV BGA 2-Wings Command and Reduced Data Interposer W4636A Technical Features Summary E5849A Single-ended ZIF Probe Cable E5847A Single-ended ZIF Probe Cable U4201A 90-pin Logic Analyzer Cables Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 6 Recommended Soldering Guidelines Soldering Steps Interposer Fabrication Notes 5 Setting up the W5643A Interposer W5643A Interposer Setup - Overview Step 1 - Soldering the W5643A Interposer and Riser Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 7 8 Setting up the W4636A Interposer W4636A Interposer Setup - Overview Soldering the W4636A Interposer Connecting the W4636A Interposer to an E5847A Probe Cable W4636A Interposer Wings Pinout Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 8 Guidelines for Shelf Life and Solder-ability of Interposers Cleaning of Interposer Gold Fingers Safety Checks and Warnings Safety Information for the E5849A and E5847A Cable Adapters To clean the instrument Safety Symbols Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 9 Contents Regulatory Notices WEEE Compliance China RoHS Index Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 10 Contents Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 11: Introduction To W5643A 78-Ball Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Introduction to W5643A 78-ball Interposer W5643A DDR5 78-ball BGA 2-Wings Interposer - Overview / 12 Compatibility with Logic Analyzer Modules / 13 DDR5 Signals Probing and Analysis using the W5643A and U4164A Combination / 13...
Page 12: W5643A Ddr5 78-Ball Bga 2-Wings Interposer - Overview
W4643A and W4641A DDR4 BGA interposers. See to know more about these cable connections. page 71 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 13: Compatibility With Logic Analyzer Modules
Compatibility with Logic Analyzer Modules The W5643A interposer is compatible with the Keysight U4164A AXIe-based logic analyzer module with speed upgrade option U4164A-02G. The speed upgrade option U4164A-02G is required because U4164A...
Page 14: W5643A Riser And Optional Grypper Socket
Pin 1 indicator on the riser must orient towards the “A1” pin of the DRAM. To know how to solder the riser to the W5643A interposer and PC board, refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 15: U4208A 61-Pin Zif Probe / Cable (Connecting To P2 Wing Of W5643A)
72 To get information such as its characteristics, specifications, pinout, safety information, accessories, and dimensions of the U4208A probe/cable, refer to the Keysight U4200A-Series Probes and Cables User Guide (part number U4200-97000) available on www.keysight.com. For the W5643A, the U4208A and U4209A probe cables connect to opposite...
Page 16: U4209A 61-Pin Zif Probe / Cable (Connecting To P1 Wing On W5643A)
72 To get information such as its characteristics, specifications, pinout, safety information, accessories, and dimensions of the U4209A probe/cable, refer to the Keysight U4200A-Series Probes and Cables User Guide (part number U4200-97000) available on www.keysight.com. For the W5643A, the U4208A and U4209A probe cables connect to opposite...
Page 17: Hardware And Software Requirements
Command, Address, Control and One W5643A One U4208A for the P2 One U4164A module DDR5 Data (right) wing of DRAM interposer One U4209A for the P1 (left) wing of interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 18: Mechanical Considerations
The following figure shows the dimensions of a W5643A interposer. Pin 1 Marking Figure 5 Dimensions of a W5643A interposer (TOP VIEW) W5643A Riser Dimensions All dimensions are in millimeters. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 19: W5643A Solder Balls And Rc Components Dimensions
• Pin A1 - Reference location at 0,0 • Edges of the pads for the tip R : ~0.1 mm height • Edges of the pads for RC components : 0.2 mm height Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 20: Providing Clearance To Components
If the DRAM package extends beyond the tip R, it may block the installation of the optional VDD and VDDQ power filter capacitors near the four corners of the BGA area. DRAM W5643A Interposer VDD and VDDQ Power Filter Capacitors Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 21: W5643A Keep-Out Volume
You can install the W5643A interposer on a riser (shipped with the NOTE interposer) or a grypper socket to provide clearance to surrounding DRAM. Figure 6 KOV of a W5643A interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 22 Introduction to W5643A 78-ball Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 23: Introduction To W4630-Series Interposers
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Introduction to W4630-Series Interposers W4630 Series DDR4 BGA Interposers - Overview / 24 W4633A DDR4 x4/x8 BGA Interposer / 25 W4631A DDR4 x16 BGA Interposer / 27...
Page 24: W4630 Series Ddr4 Bga Interposers - Overview
The W4630-series DDR4 DRAM BGA Interposers enable probing of embedded DDR4 DRAM (x4, x8, and x16) directly at the ball grid array using the Keysight logic analyzers. The DDR4 interposers interpose between the DRAM being probed and the PC board where the DRAM would normally be soldered.
Page 25: W4633A Ddr4 X4/X8 Bga Interposer
Logic analyzer connections are made using E5849A single ended ZIF probe cables. Doors of ZIF connectors attach to the bottom side of flex wings of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 26: W4633A Riser And Optional Grypper Socket
DDR4 78-ball DRAM. To know how to solder the riser to the interposer and PC board, refer to the topic “Soldering the W4633A Interposer and Riser" on page 79. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 27: W4631A Ddr4 X16 Bga Interposer
Logic analyzer connections are made using E5849A single ended ZIF probe cables. Doors of ZIF connectors attach to the bottom side of flex wings of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 28: W4631A Riser And Optional Grypper Socket
To know how to solder the riser to the interposer and PC board, refer to the topic “Mounting a W4631A Interposer on a PC Board using Riser and/or Sockets" on page 89. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 29: W4636A Ddr4 X16 Kov Bga 2-Wings Command And Reduced Data Interposer
No riser is required with the W4636A interposer. The interposer shipment, NOTE therefore, does not include any riser. You can optionally use a grypper socket which is sold separately at: http://www.hsiotech.com/products/ released-products/engineering- products/grypper-family Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 30: W4636A Technical Features Summary
Logic analyzer connections are made using E5847A single ended ZIF probe cables. Doors of ZIF connectors attach to the top side of flex wings of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 31: E5849A Single-Ended Zif Probe Cable
• “Connecting the W4631A Interposer to E5849A Probe Cables" on page 93 • “Connecting the W4633A Interposer to E5849A Probe Cables" on page 80 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 32: E5847A Single-Ended Zif Probe Cable
To know how to make connections between a W4636A interposer and an E5849A probe cable, refer to the topic: • “Connecting the W4636A Interposer to an E5847A Probe Cable" on page 106 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 33: U4201A 90-Pin Logic Analyzer Cables
“Connecting the E5849A Probe Cables to a Logic Analyzer" on page 84 (for W4633A) • “Connecting the E5847A Probe Cable to a Logic Analyzer" on page 109 (for W4636A) Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 34: Hardware And Software Requirements
Keysight web site at: www.keysight.com/find/lpa-sw-download. The following table displays the number of W4630A-series BGA interposers and cable adapters required to provide connections to channels of your logic analyzer module. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 35 U4154A/B module for all through Keysight data rates Command, Address, Control One W4636A One E5847A Three U4201A One U4164A or and partial DQ/DQS U4154A/B module Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 36: Mechanical Considerations
Introduction to W4630-Series Interposers Mechanical Considerations W4633A Interposer Dimensions The following figure shows the dimensions of a W4633A DDR4 DRAM BGA interposer. Figure 15 Dimensions of a W4633A interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 37: W4633A Keep-Out Volume
You must install the W4633A interposer on a riser (shipped with the interposer) or a grypper NOTE socket to provide clearance to surrounding DRAM and RCs on the bottom side of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 38 Introduction to W4630-Series Interposers Figure 17 KOV of a W4633A interposer The following figure shows the KOV of an E5849A probe cable when connected to a W4633A interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 39 Introduction to W4630-Series Interposers Figure 18 KOV of a W4633A interposer with an E5849A cable (SIDE VIEW) Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 40: W4631A Interposer Dimensions
You must install the W4631A interposer on a riser (shipped with the interposer) or a grypper NOTE socket to provide clearance to surrounding DRAM and RCs on the bottom side of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 41 - “A”, “B”, “C” represent height restriction areas on the user board. Refer to the previous figure to visualize these Height Restrictions Areas A, B, and C in the side view of a mounted W4631A interposer. Figure 21 KOV of a W4631A interposer (BOTTOM VIEW) Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 42: W4636A Interposer Dimensions
Dimensions of a W4636A interposer (TOP VIEW) W4636A Keep-Out Volume The following figure shows the KOV of an E5847A probe cable when connected to a W4636A interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 43 Introduction to W4630-Series Interposers Figure 23 KOV of a W4636A interposer with an E5847A cable Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 44 Introduction to W4630-Series Interposers Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 45: Introduction To W4640-Series Interposers
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Introduction to W4640-Series Interposers W4640-Series DDR4 BGA Interposers - Overview / 46 W4643A DDR4 x4/x8 BGA 2-Wings Interposer / 47 W4641A DDR4 x16 BGA 2-Wings Interposer / 49...
Page 46: W4640-Series Ddr4 Bga Interposers - Overview
Introduction to W4640-Series Interposers W4640-Series DDR4 BGA Interposers - Overview The W4640-series DDR4 DRAM BGA Interposers enable probing of embedded DDR4 DRAM (x4, x8, and x16) directly at the ball grid array using the Keysight U4164A logic analyzer. These interposers provide you: •...
Page 47: W4643A Ddr4 X4/X8 Bga 2-Wings Interposer
RC components network is present on the W4643A interposer. No RC network present on the U4208A/U4209A probe cables. Also, there are no RCs on the bottom of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 48: W4643A Riser And Optional Grypper Socket
DDR4 78-ball DRAM. To know how to solder the riser to the W4643A interposer and PC board, refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 49: W4641A Ddr4 X16 Bga 2-Wings Interposer
Logic analyzer connections are made using U4208A and U4209A ZIF probe cables. The U4208A/U4209A ZIF connectors doors open on the top of the W4641A wings and away from these wings. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 50: W4641A Riser And Optional Grypper Socket
Attaching this riser to a DDR3 target system can result in damaging the target system. To know how to solder the riser to the W4641A interposer and PC board, refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 51: U4208A 61-Pin Zif Probe / Cable (Connecting To Left Wing (P1) Of W4641A/W4643A)
126 To get information such as its characteristics, specifications, pinout, safety information, accessories, and dimensions of the U4208A probe/cable, refer to the Keysight U4200A-Series Probes and Cables User Guide (part number U4200-97000) available on www.keysight.com. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 52: U4209A 61-Pin Zif Probe / Cable (Connecting To Right Wing (P2) Of W4641A/W4643A)
126 To get information such as its characteristics, specifications, pinout, safety information, accessories, and dimensions of the U4209A probe/cable, refer to the Keysight U4200A-Series Probes and Cables User Guide (part number U4200-97000) available on www.keysight.com. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 53: Hardware And Software Requirements
ADD/CMD/DATA capture and analysis. You can install the above-mentioned software components by NOTE downloading the latest versions of the required executables from the Keysight web site at: www.keysight.com/find/lpa-sw-download. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 54 Command, Address, Control and One W4641A One U4208A for the One U4164A module for all Data left wing supported data rates One U4209A for the right wing Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 55: Mechanical Considerations
The following figure shows the dimensions of a W4643A interposer. Figure 30 Dimensions of a W4643A interposer (TOP VIEW) W4643A Riser Dimensions All dimensions are in millimeters. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 56: W4643A Keep-Out Volume
W4643A Keep-Out Volume You can install the W4643A interposer on a riser (shipped with the interposer) or a grypper NOTE socket to provide clearance to surrounding DRAM. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 57 Introduction to W4640-Series Interposers Figure 31 KOV of a W4643A interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 58: W4641A Interposer Dimensions
The following figure shows the dimensions of a W4641A interposer. Figure 32 Dimensions of a W4641A interposer (TOP VIEW) W4641A Riser Dimensions All dimensions are in millimeters. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 59: W4641A Keep-Out Volume
W4641A Keep-Out Volume You can install the W4641A interposer on a riser (shipped with the interposer) or a grypper NOTE socket to provide clearance to surrounding DRAM. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 60 Introduction to W4640-Series Interposers Figure 33 KOV of a W4641A interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 61: Interposer And Riser Soldering Guidelines
Soldering Steps / 64 Interposer Fabrication Notes / 66 In this chapter, Keysight provides the soldering guidelines for the interposers described in this user’s guide. However, Keysight cannot guarantee the successful interposer installation due to variations in processes and equipment used at individual BGA rework facilities.
Page 62 Interposers and Riser Soldering Guidelines Recommended Reading 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 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 63: Recommended Soldering Guidelines
SnBi unleaded solder process can be used to attach a riser, when it is compatible with your prototype debug and validation methodologies. • The flex wings on Keysight BGA interposers are made with high performance flex material. • The maximum processing temperature that the clock divider interposer can withstand is 250 °C for not more than 150 seconds.
Page 64: Soldering Steps
(0.05 In) to insure that the copper foil does not fracture. c Place the interposer using vision equipped BGA placement/reflow system such as an SRT. d Reflow per the prepared heating profile. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 65 Reflow per the prepared heating profile. Post Processing a Remove flux residue. b Remove any Kapton tape heat shielding and peelable mask material. c Remove heat shielding from the target board. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 66: Interposer Fabrication Notes
When the BGA interposer is soldered to a riser, flatness must be maintained on the order of 3.5 mils or less across the BGA footprint to maximize successful soldering to the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 67: Setting Up The W5643A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Setting up the W5643A Inter- poser W5643A Interposer Setup - Overview / 68 Step 1 - Soldering the W5643A Interposer and Riser / 69 Step 2 - Connecting the W5643A Interposer to U4208A and U4209A Probe Cables / 70...
Page 68: W5643A Interposer Setup - Overview
Discard these packs once the package is opened. You should exercise caution when using the sharp alignment and connector WARNING pins for the interposer and cable to avoid personal injury. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 69: Step 1 - Soldering The W5643A Interposer And Riser
W5643A that surround the DRAM outline. This is allowed as long as there is clearance. for mechanical considerations. page 18 Refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 70: Step 2 - Connecting The W5643A Interposer To U4208A And U4209A Probe Cables
The U4208A and U4209A cables ship with pod labels unattached. Use the sheet of labels included with the cable shipment to correctly label pods as displayed in the following picture. Pod with one cable Pod with two cables Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 71: W5643A Interposer And U4208A / U4209A Probe Cable Connection And Orientation
Align the probe cable’s ZIF connector tabs with interposer’s wing notches. Shut the ZIF door. Ensure that the wings of the interposer are properly latched to the ZIF connectors on the U4208A and U4209A probe cables. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 72: Step 3 - Connecting The U4208A And U4209A Probe Cables To A U4164A Logic Analyzer
The mapping of the U4208A and U4209A probe cable pods and logic analyzer pods is also illustrated with the help of the following diagram. Figure 36 Connections between U4208A and U4209A probe cables and Logic Analyzer pods Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 73: W5643A Interposer Wings Pinout
W5643A Interposer Wings Pinout W5643A Interposer Wings Left Wing (P1) Right Wing (P2) DQS_t LBDQ DQS_c CA13 RESET_n CA11 CA_ODT CS_n ALERT_n CK_c CK_t CA10 U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 74 Setting up the W5643A Interposer W5643A Interposer Wings Left Wing (P1) Right Wing (P2) DM_n CA12 LBDQS U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 75: Logic Analyzer Channels To Signals Mapping
Pod 1 Pod 3 Pod 5 Pod 7 (Dual (Dual (Quad (Quad LBDQS sampled) sampled) sampled) sampled LBDQ ALERT_n CS_n DQS_t CA_ODT CK_c CLK# CK_t CLK# CLK# CLK# Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 76 Setting up the W5643A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 77: Setting Up The W4633A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Setting up the W4633A Inter- poser W4633A Interposer Setup - Overview / 78 Soldering the W4633A Interposer and Riser / 79 Connecting the W4633A Interposer to E5849A Probe Cables / 80...
Page 78: W4633A Interposer Setup - Overview
Do not open the vacuum sealed packs of the W4633A interposer until you are ready to install NOTE the interposer. Discard these packs once the package is opened. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 79: Soldering The W4633A Interposer And Riser
DRAM. Refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 80: Connecting The W4633A Interposer To E5849A Probe Cables
The right wing of Cable 2 connects to P3-Address/Command wing of the interposer while the left wing of Cable 2 has not been used and left unconnected. Figure 38 W4633A Interposer and E5849A Cable Connections Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 81 Angle the flex wing of the interposer into an E5849A ZIF connector. GND towards door closure. Align the E5849A ZIF connector tabs with interposer’s wing notches. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 82: W4633A Interposer Wings Pinout
RST# DQ2_2 DQ2_1 PULLDN DQ6_2 DQ6_1 DQ7_2 ALERT# DQ7_1 E5849A Cable 1 E5849A Cable 1 E5849A Cable 2 Left Wing Connector Right Wing Connector Right Wing Connector Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 83 DQ3_2 DQ3_1 DQ1_2 ACT# DQ1_1 DM#_2 DM#_1 DQS_2 DQS_1 E5849A Cable 1 E5849A Cable 1 E5849A Cable 2 Left Wing Connector Right Wing Connector Right Wing Connector Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 84: Connecting The E5849A Probe Cables To A Logic Analyzer
When you connect the E5849A probe cables to a U4154A Logic Analyzer as per the diagram in Figure 40, the logic analyzer channels are mapped to signals as per the table displayed below. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 85: Signals Not Probed By The Logic Analyzer
Signals not probed by the Logic Analyzer The following signals are omitted from the Logic Analyzer connections for the W4633A interposer. Interposer Signal Name W4633A VREFCA, TEN, ZQ Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 86 Setting up the W4633A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 87: Setting Up The W4631A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Setting up the W4631A Inter- poser W4631A Interposer Setup - Overview / 88 Mounting a W4631A Interposer on a PC Board using Riser and/or Sockets / 89...
Page 88: W4631A Interposer Setup - Overview
The balls on the bottom side of the Riser or Interposer can be easily damaged. Care must be CAUTION taken handling the Interposer. If the balls become deformed due to handling, these may not interface the connector as intended. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 89: Mounting A W4631A Interposer On A Pc Board Using Riser And/Or Sockets
Use a soft brush and air to remove any debris. Solder piled up at the base of the balls may require more intricate cleaning or removal procedures. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 90: To Mount The W4631A Interposer On A Pc Board
The interposer set, in the figure below, has a riser installed at its bottom and a socket installed at the top. Pin 1 Marking on top of the W4631A Interposer Pin 1 Marking on the Alignment Template Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 91 PC board. As stated in the HSIO Socket Installation guide, it may require considerable force to seat the Interposer in the socket. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 92 This could deform the balls on the bottom of the Interposer.To avoid this, support the interposer balls with finger pressure while squeezing the memory into the socket. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 93: Connecting The W4631A Interposer To E5849A Probe Cables
The left and right wings of Cable 1 connect to J1-Data and J2-Address/Data wings respectively of the interposer. • The left and right wings of Cable 2 connect to J3-Address/Command and J4-Address/Data wings respectively of the interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 94 ZIF doors close on the ground side of the flex wings. The following picture displays a W4631A interposer with E5849A ZIF connectors attached to its flex wings. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 95: W4631A Interposer Wings Pinout
Signals beginning with an "X" are unused signals. • Signals appended with _1 and _2 are double-probed signal pairs. • DQS strobes are only single probed, but both polarities are probed. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 96 DQU4_1 DQU5_2 DQU4_2 E5849A Cable 1 E5849A Cable 1 E5849A Cable 2 E5849A Cable 2 Left Wing Connector Right Wing Connector Right Wing Connector Left Wing Connector Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 97: Connecting The E5849A Probe Cables To A Logic Analyzer
E5849A probe cables used in a W4631A interposer setup (for data rates under 2.5Gbs). Figure 44 Connections between W4631A with two E5849A and pods of a single U4154A/B logic analyzer (for data rates under 2.5Gbs) Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 98: E5849A Cables To Logic Analyzer Pods Connection Mapping (For < 2.5 Gb/S Data Rates)
Signals beginning with an "X" are unused signals. • Signals appended with _1 and _2 are double-probed signal pairs. • Table cells marked with indicate pins that are not accessible with E5849A cables. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 99 PULLDN CLK# CK_c LA Channel Pod 3 Pod 7 Pod 2 LA Channel Pod 1 Pod 5 Pod 6 U4154A/B Logic Analyzer Pods U4154A/B Logic Analyzer Pods Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 100 LA Channel Module 1 Module 2 Module 1 Pod 3 Pod 7 Pod 2 Pod 1 Pod 5 Pod 6 U4154A/B Logic Analyzer Pods U4154A/B Logic Analyzer Pods Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 101: Signals Not Probed By The Logic Analyzer
Signal Name Type Description VREFCA Power Supply Reference voltage for control, command, and address pins Input Connectivity test mode: LOW during normal operation Reference ZQ calibration reference Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 102 Setting up the W4631A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 103: Setting Up The W4636A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Setting up the W4636A Inter- poser W4636A Interposer Setup - Overview / 104 Soldering the W4636A Interposer / 105 Connecting the W4636A Interposer to an E5847A Probe Cable / 106...
Page 104: W4636A Interposer Setup - Overview
Do not open the vacuum sealed packs of the W4636A interposer until you are ready to install NOTE the interposer. Discard these packs once the package is opened. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 105: Soldering The W4636A Interposer
No additional riser or a socket is required between the top of the interposer and DRAM. Refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 106: Connecting The W4636A Interposer To An E5847A Probe Cable
ZIF doors close on the top side of the flex wings. The following picture displays a W4636A interposer with E5847A ZIF connectors attached to its flex wings. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 107: W4636A Interposer Wings Pinout
W4636A Interposer Wings Pinout The following table lists the pinout of the two wings of a W4636A interposer. In the table below, clock inputs are highlighted with yellow. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 108 DQU2 DQU6 DQU4 ALERT_n DMU_n DQSL_c DQL0 CS_n RST_n CK_c ACT_n CK_t DQU7 DQU5 DQU3 DQU1 DQSU_c E5847A Cable E5847A Cable Left Wing Connector Right Wing Connector Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 109: Connecting The E5847A Probe Cable To A Logic Analyzer
48, the logic analyzer channels are mapped to signals as per the mapping table Table 9 displayed below. These signals are automatically configured when you load one of the configuration files supplied with the Keysight B4621B decoder software. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 110: Signals Not Probed By The Logic Analyzer
Pod 7 U4154A/B Logic Analyzer Pods Signals not probed by the Logic Analyzer The following signals are omitted from the Logic Analyzer connections for the W4636A interposer. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 111 Setting up the W4636A Interposer Signal Name Type VREFCA Control and other signals group DQS0 Data signal group DQS1 DQS1# Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 112 Setting up the W4636A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 113: Setting Up The W4643A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide Setting up the W4643A Inter- poser W4643A Interposer Setup - Overview / 114 Soldering the W4643A Interposer and Riser / 115 Connecting the W4643A Interposer to U4208A and U4209A Probe Cables / 116...
Page 114: W4643A Interposer Setup - Overview
Do not open the vacuum sealed packs of the W4643A interposer until you are ready to install NOTE the interposer. Discard these packs once the package is opened. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 115: Soldering The W4643A Interposer And Riser
DRAM. Refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 116: Connecting The W4643A Interposer To U4208A And U4209A Probe Cables
W4643A interposer. ZIF doors open on the top of the flex wings. The following picture displays a W4643A interposer with U4208A and U4209A ZIF connectors attached to its flex wings. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 117: W4643A Interposer Wings Pinout
• Table cells marked with indicate pins that are not accessible. Table 10 W4643A Interposer Wings Pinout W4643A Interposer Wings Right Wing Left Wing DBI_n U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 118 Setting up the W4643A Interposer W4643A Interposer Wings Right Wing Left Wing CS_n ALERT_n CK_c CK_t ACT_n RST_n DQS_t DQS_c TDQS_c U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 119: Connecting The U4208A And U4209A Probe Cables To A U4164A Logic Analyzer
The mapping of the U4208A and U4209A probe cable pods and logic analyzer pods is also illustrated with the help of the following diagram. Figure 52 Connections between U4208A and U4209A probe cables and Logic Analyzer pods Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 120: Logic Analyzer Channels To Signals Mapping
Pod 3 Pod 7 DQS_t (Signals (Signals can be can be dual-sampl quad-sampl ed on this ed on this DQS_c pod) pod) ACT_n TDQS_c RST_n CLK# CLK# Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 121: Signals Not Probed By The Logic Analyzer
Signals not probed by the Logic Analyzer The following signals are omitted from the Logic Analyzer connections for the W4643A interposer. Interposer Signal Name W4643A VREFCA, TEN, ZQ, DQSL_c Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 122 Setting up the W4643A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 123: Setting Up The W4641A Interposer
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide 10 Setting up the W4641A Inter- poser W4641A Interposer Setup - Overview / 124 Soldering the W4641A Interposer / 125 Connecting the W4641A Interposer to U4208A and U4209A Probe Cables / 126...
Page 124: W4641A Interposer Setup - Overview
Do not open the vacuum sealed packs of the W4641A interposer until you are ready to install NOTE the interposer. Discard these packs once the package is opened. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 125: Soldering The W4641A Interposer
A maximum of 10 mm x 14 mm DDR4 DRAM package can fit on top of the W4641A interposer. NOTE Refer to the chapter “Interposer and Riser Soldering Guidelines" on page 61. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 126: Connecting The W4641A Interposer To U4208A And U4209A Probe Cables
U4208A probe cable to the left wing of the interposer. • the U4209A probe cable to the right wing of the interposer. Figure 54 W4641A Interposer and U4208A / U4209A Probe Cable Connections Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 127: W4641A Interposer Wings Pinout
Table 12 W4641A Interposer Wings Pinout W4641A Interposer Wings Right Wing Left Wing DQL1 DQU1 DQU3 DQU5 DQSU_c DQSU_t DQU7 DQL3 U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 128 Right Wing Left Wing DQL5 DQL7 DML_n DML_n CS_n ACT_n CK_c CK_t DQSL_t DMU_n ALERT_n DMU_n DQL6 DQL2 DQL4 DQU4 RST_n DQU6 DQU0 DQU2 DQL0 U4209A U4208A Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 129: Connecting The U4208A And U4209A Probe Cables To A U4164A Logic Analyzer
The mapping of the U4208A and U4209A probe cable pods and logic analyzer pods is also illustrated with the help of the following diagram. Figure 56 Connections between U4208A and U4209A probe cables and Logic Analyzer pods Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 130: Logic Analyzer Channels To Signals Mapping
DQU6 (Signals (Signals can be can be dual-sampl quad-sampl ed on this ed on this ACT_n DQU0 pod) pod) DQU2 DQSL_t DMU_n DQL0 DMU_n RST_n CLK# CLK# Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 131: Signals Not Probed By The Logic Analyzer
Signals not probed by the Logic Analyzer The following signals are omitted from the Logic Analyzer connections for the W4641A interposer. Interposer Signal Name W4641A VREFCA, TEN, ZQ, DQSL_c Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 132 Setting up the W4641A Interposer Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 133: Setting Up The Logic Analyzer For W5643A And W4630/40-Series Interposers
Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide 11 Setting Up the Logic Analyzer for W5643A and W4630/40-Series Interposers Before You Start / 134 Using DDR Setup Assistant / 135 Loading a Configuration File / 136...
Page 134: Before You Start
“Hardware and Software Requirements" on page 17 for W5643A • “Hardware and Software Requirements" on page 34 for W4630-series • “Hardware and Software Requirements" on page 53 for W4640-series Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 135: Using Ddr Setup Assistant
Using DDR Setup Assistant One of the tools included in the software requirements for these interposers is the DDR Setup Assistant tool. This tool is available at no charge as part of the Keysight B4661A memory analysis software package. This tool simplifies measurement setup and minimizes the time to tune state mode measurements on the logic analyzer.
Page 136: Loading A Configuration File
W5643A, W4630-series and W4640-series interposers. A set of DDR5 and DDR4 x4, x8, and x16 configuration files is provided with the Keysight DDR Decoder software. To obtain this set of configuration files, you must install the latest version of the B4661A software for the specific interposer model number you are using.
Page 137: To Save A Configuration File
ALA format configuration files are more complete and efficient than XML format configuration files. See the Logic and Protocol Analyzer online help for more information on these formats. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 138 Setting Up the Logic Analyzer for W5643A and W4640 / 30 Series Interposers Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 139 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide 12 Characteristics, Regulatory, Safety and Storage Information Operating Characteristics / 140 Storage, Inspection, Baking, and Cleaning Guidelines / 141 Safety Checks and Warnings / 142 Safety Information for the E5849A and E5847A Cable Adapters / 143...
Page 140: Characteristics, Regulatory, Safety And Storage Information
For indoor use only. Characteristics Description To interposer Memory bus signals from target system From interposer High-density connectors for Keysight U4154A/B and U4164A AXIe-based logic analyzer modules Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 141: Storage, Inspection, Baking, And Cleaning Guidelines
If delamination occurs, the interposer cannot be used. Cleaning of Interposer Gold Fingers • Use Isopropyl alcohol to clean interposer contacts. • Never use abrasive cleaning materials. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 142: Safety Checks And Warnings
Do not attempt internal service or adjustment. Service should be carried out by a Keysight Technologies authorized service personnel. For any service needs, contact Keysight Technologies. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 143: Safety Information For The E5849A And E5847A Cable Adapters
"Caution" or "Warning" risk of danger marked on product. See "Safety Notices" on page 2 and refer to this manual for a description of the specific danger. Hazardous voltage symbol. Earth terminal symbol: Used to indicate a circuit common connected to grounded chassis. Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 144 Product Category: With reference to the equipment types in the WEEE Directive Annex I, this product is classed as a "Monitoring and Control Instrumentation" product. Do not dispose in domestic household waste. To return unwanted products, contact your local Keysight office, or see "www.keysight.com"...
Page 145 W5643A feature summary, pin 1, W5643A KOV, pinout, 73, 82, 95, 107, 117, W5643A logic analyzer channel probe cable, 31, mapping, feature summary, 25, 27, 30, W5643A overview, Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 146 Index W5643A pinout, W5643A riser, W5643A soldering, WEEE compliance, Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 147 Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide...
Page 148 This information is subject to change without notice. © Keysight Technologies 2024 Edition 8 February 2024 *W4631-97000* www.keysight.com...

This manual is also suitable for:

W4640 series W4630 series

Keysight W5643A Series Installation Manual

1 Introduction to W5643A 78-Ball Interposer

2 Introduction to W4630-Series Interposers

3 Introduction to W4640-Series Interposers

4 Interposer and Riser Soldering Guidelines

5 Setting up the W5643A Interposer

6 Setting up the W4633A Interposer

7 Setting up the W4631A Interposer

8 Setting up the W4636A Interposer

9 Setting up the W4643A Interposer

10 Setting up the W4641A Interposer

11 Setting up the Logic Analyzer for W5643A and W4630/40-Series Interposers

12 Characteristics, Regulatory, Safety and Storage Information

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