MICROCHIP EVB-LAN7801 Ethernet Development System User Guide

EVB-LAN7801
Ethernet Development System
User’s Guide

EVB-LAN7801 Ethernet Development System

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ISBN: 978-1-5224-9352-5
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NOTES: .

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE online help.
Select the Help menu, and then Topics to open a list of available online help files.

INTRODUCTION
This chapter contains general information that will be useful to know before using the Microchip EVB-LAN7801-EDS (Ethernet Development System). Items discussed in this chapter include:

• Document Layout
• Conventions Used in this Guide
• Warranty Registration
• The Microchip Website
• Development Systems Customer Change Notification Service
• Customer Support
• Document Revision History

DOCUMENT LAYOUT
This document features the EVB-LAN7801-EDS as a development tool for Microchip LAN7801 in its Ethernet development system. The manual layout is as follows:

• Chapter 1. “Overview” – This chapter shows a brief description of the EVB-LAN7801-EDS.
• Chapter 2. “Board Details and Configuration” – This chapter includes details and instructions for using the EVB-LAN7801-EDS.
• Appendix A. “EVB-LAN7801-EDS Evaluation Board”– This appendix shows the EVB-LAN7801-EDS evaluation board image.
• Appendix B. “Schematics” – This appendix shows the EVB-LAN7801-EDS schematic diagrams.
• Appendix C. “Bill of Materials”– This appendix includes the EVB-LAN7801-EDS Bill of Materials.

CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS

Arial font:
Italic characters| Referenced books| MPLAB ® IDE User’s Guide
Emphasized text| …is the only compiler…
Initial caps| A window| the Output window
A dialog| the Settings dialog
A menu selection| select Enable Programmer
Quotes| A field name in a window or dialog| “Save project before build”
Underlined, italic text with right angle bracket| A menu path| _ _File

Save__
Bold characters| A dialog button| Click OK
A tab| Click the Power tab
N‘Rnnnn| A number in verilog format, where N is the total number of digits, R is the radix and n is a digit.| 4‘b0010, 2‘hF1
Text in angle brackets < >| A key on the keyboard| Press ,
Courier New font:
Plain Courier New| Sample source code| #define START
Filenames| autoexec.bat
File paths| c:\mcc18\h
Keywords| _asm, _endasm, static
Command-line options| -Opa+, -Opa-
Bit values| 0, 1
Constants| 0xFF, ‘A’
Italic Courier New| A variable argument| file.o, where file can be any valid filename
Square brackets [ ]| Optional arguments| mcc18 [options] file [options]
Curly brackets and pipe character: { | }| Choice of mutually exclusive arguments; an OR selection| errorlevel {0|1}
Ellipses…| Replaces repeated text| var_name [, var_name…]
Represents code supplied by user| void main (void) { … }

WARRANTY REGISTRATION
Please complete the enclosed Warranty Registration Card and mail it promptly. Sending the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip website.
THE MICROCHIP WEBSITE
Microchip provides online support via our website at www.microchip.com. This website is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the website contains the following information:

• Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions, or errata related to a specified product family or development tool of interest.
To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:

•  Compilers – The latest information on Microchip C compilers, assemblers, linkers
  and other language tools. These include all MPLABCC compilers; all MPLAB™ assemblers (including MPASM™ assembler); all MPLAB linkers (including MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object
  librarian).

• Emulators – The latest information on Microchip in-circuit emulators. This includes the MPLAB™ REAL ICE and MPLAB ICE 2000 in-circuit emulators.

• In-Circuit Debuggers – The latest information on the Microchip in-circuit debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3 debug express.

• MPLAB® IDE – The latest information on Microchip MPLAB IDE, the Windows Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and MPLAB SIM simulator, as well as general editing and debugging features.

• Programmers – The latest information on Microchip programmers. These include production programmers such as MPLAB® REAL ICE in-circuit emulator, MPLAB ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included are non-production development programmers such as PICSTART Plus and PICkit™ 2 and 3.

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
  Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document.
  Technical support is available through the web site at: http://www.microchip.com/support

DOCUMENT REVISION HISTORY

Overview

1.1 INTRODUCTION

The EVB-LAN7801 Ethernet Development System is a USB Bridge-based platform for evaluating Ethernet switch and PHY products. Compatible switch and PHY evaluation boards connect to the EDS board via an RGMII connector. These daughter boards are available separately. The EDS board is not intended for stand-alone use and has no Ethernet capabilities when no daughter board is connected. See Figure 1-1. The board is built around a LAN7801 Super Speed USB3 Gen1 to 10/100/1000 Ethernet Bridge.
The bridge device has support for external switch and PHY devices via RGMII. In addition, there are configuration jumpers to evaluate different power schemes, as well as the MIIM and GPIO options of the LAN7801. The EVB- LAN7801-EDS board comes with an EEPROM preloaded with firmware to support the EVB-KSZ9131RNX evaluation board out of the box. Users can access registers and configure for a different daughter board by using the MPLAB® Connect Con- figurator tool. The EEPROM bin files and the configurator are available for download on the product page of this board. Users may modify bin files for their needs.

1.2 BLOCK DIAGRAM
Refer to Figure 1-1 for the EVB-LAN7801-EDS Block Diagram.

1.3 REFERENCES
Concepts and materials available in the following document may be helpful when reading this user’s guide. Visit www.microchip.com for the latest documentation.

• LAN7801 SuperSpeed USB 3.1 Gen 1 to 10/100/1000 Data Sheet

1.4 TERMS AND ABBREVIATIONS

• EVB – Evaluation Board
• MII – Media Independent Interface
• MIIM – Media Independent Interface Management (also known as MDIO/MDC)
• RGMII – Reduced Gigabit Media Independent Interface
• I² C – Inter Integrated Circuit
• SPI – Serial Protocol Interface
• PHY – Physical Transceiver

Board Details and Configuration

2.1 INTRODUCTION
This chapter describes the power, Reset, clock, and configuration details of the EVB-LAN7801 Ethernet Development System.
2.2 POWER
2.2.1 VBUS Power
The evaluation board can be powered by the connected host via the USB cable. The appropriate jumpers must be set to VBUS SEL. (See Section 2.5 “Configuration” for details.) In this mode, operation is limited to 500 mA for USB 2.0 and 900 mA for USB 3.1 by the USB host. (See LAN7801 Data Sheet for more details). In most cases, this will be sufficient for operation even with attached daughter boards.
2.2.2 +12V Power
A 12V/2A power supply may be connected to J14 on the board. The F1 fuse is provided on the board for overvoltage protection. The appropriate jumpers must be set to BARREL JACK SEL. (See Section 2.5 “Configuration” for details.) The SW2 switch must be in the ON position to power the board.
2.3 RESETS
2.3.1 SW1
The SW1 push button can be used to reset the LAN7801. If a jumper is installed at J4, SW1 will also reset the connected daughter board.
2.3.2 PHY_RESET_N
The LAN7801 can reset the daughter board via the PHY_RESET_N line.
2.4 CLOCK
2.4.1 External Crystal
The evaluation board utilizes an external crystal, which provides the 25 MHz clock to the LAN7801.
2.4.2 125 MHz Reference Input
By default, the CLK125 line on the LAN7801 is tied to ground as there is no 125 MHz reference on board to operate from. To test this functionality and for the connected daughter board to supply a 125 MHz reference, remove R8 and populate R29 with a 0 ohm resistor.
2.4.3 25 MHz Reference Output
The LAN7801 outputs a 25 MHz reference to the daughter board. To use this reference for a different off-board device, the RF connector at J8 can be populated.
2.5 CONFIGURATION
This section describes the different board features and configuration settings of the EVB-LAN7801 Ethernet Development System.
A top view of the EVB-LAN7801-EDS is shown in Figure 2-1.

2.5.1 Jumper Settings
Table 2-1, Table 2-2, Table 2-3, Table 2-4, and Table 2-5 describe the jumper settings.
The recommended initial configuration is indicated by the term, “(default),” listed in the tables.
TABLE 2-1: INDIVIDUAL TWO-PIN JUMPERS

(Default)
J4| Reset| Enables SW1 Reset button to reset daughter board device| Disabled| Enabled (Default)

TABLE 2-2: RGMII POWER SELECT JUMPERS

Enabled
J10| 5V| Enables 5V to be passed to the daughter board| Disabled (Default)| Enabled
J11| 3V3| Enables 3.3V to be passed to the daughter board| Disabled| Enabled (Default)

Note 1: Check which voltages your connected daughter board needs to operate and connect accordingly.
TABLE 2-2: RGMII POWER SELECT JUMPERS

Enabled

Note 1: Check which voltages your connected daughter board needs to operate and connect accordingly.
TABLE 2-3: INDIVIDUAL THREE-PIN JUMPERS

Jumper| Label| Description| Jumper 1-2| Jumper 2-3| Open
---|---|---|---|---|---
J3| PME Mode Sel| PME mode pull-up/ pull-down selection| 10K

Pull-down

| 10K Pull-up| No Resistor (Default)

Note 1 : PME_Mode pin can be accessed from GPIO5.
TABLE 2-4: VARIO SELECT SIX-PIN JUMPER

Jumper

| ****

Label

| ****

Description

| Jumper 1-2 “1V8”| Jumper 3-4 “2V5”| Jumper 5-6 “Default 3V3”
---|---|---|---|---|---
J18| VARIO Sel| Selects the VARIO level for the board and daughter board| 1.8V VARIO

voltage

| 2.5V VARIO

voltage

| 3.3V VARIO

voltage (Default)

Note 1: Only one VARIO voltage can be selected at a time.
TABLE 2-5 : BUS/SELF-POWER SELECT JUMPERS

Sel

| Determines source for LAN7801 VBUS_-

DET pin

| Bus-Powered mode| Self-Powered mode (Default)
J7| 5V Pwr Sel| Determines source for board 5V power rail| Bus-Powered mode| Self-Powered mode (Default)
J17| 3V3 EN Sel| Determines the source for the 3V3 regulator enable pin| Bus- Powered mode| Self-Powered mode (Default)

Note 1: Jumper settings between J6, J7, and J17 should always match.
2.6 USING THE EVB-LAN7801-EDS
The EVB-LAN7801-EDS evaluation board is connected to the PC through a USB cable. The LAN7801 device supports Windows® and Linux® operating system. The drivers are provided on the LAN7801 device’s product page for both operating systems.
A ‘readme’ file that describes the driver installation process in detail is also provided with the drivers. For example, once the drivers are installed correctly for Windows 10, the board can be detected in the Device Manager as shown in Figure 2-2.

The EVB-LAN7801-EDS can be used to evaluate the LAN7801 USB Ethernet Bridge alongside various other Microchip PHY and switch devices.
For example, with the EVB-KSZ9131RNX evaluation board installed, the EVB can be tested as a simple bridge device by connecting the USB port to the PC and Network cable to the daughter board. Using the network cable, the PC can be connected to a network to perform a ping test.

EVB-LAN7801-EDS Evaluation Board

A.1 INTRODUCTION
This appendix shows the top view of the EVB-LAN7801-EDS evaluation board.

NOTES:

Schematics

B.1 INTRODUCTION
This appendix shows the EVB-LAN7801-EDS schematics.

Bill of Materials

C.1 INTRODUCTION
This appendix contains the EVB-LAN7801-EDS evaluation board Bill of Materials (BOM).
TABLE C-1:BILL OF MATERIALS

Item| Qty| Reference| Description| Populated| Manufacturer| Manufacturer Part Number
---|---|---|---|---|---|---
1| 1| C1| CAP CER 0.1 μF 25V 10% X7R SMD 0603| Yes| Murata| GRM188R71E104KA01D
2| 31| C2, C3, C5, C8, C9, C11, C12, C13, C15, C17, C19, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C47, C48, C51, C54, C62, C64, C65, C67, C74, C75| CAP CER 0.1 μF 50V 10% X7R SMD 0402| Yes| TDK| C1005X7R1H104K050BB
3| 2| C4, C10| CAP CER 2.2 μF 6.3V 10% X7R SMD 0603| Yes| TDK| C1608X7R0J225K080AB
4| 3| C6, C7, C63| CAP CER 15 pF 50V 5% NP0 SMD 0402| Yes| Murata| GRM1555C1H150JA01D
5| 3| C14, C16, C18| CAP CER 1 μF 35V 10% X5R SMD 0402| Yes| Murata| GRM155R6YA105KE11D
6| 1| C20| CAP CER 22 μF 10V 20% X5R SMD 0805| Yes| Taiyo Yuden| LMK212BJ226MGT
7| 1| C21| CAP CER 4.7 μF 6.3V 20% X5R SMD 0603| Yes| Panasonic| ECJ-1VB0J475M
8| 2| C32, C66| CAP CER 10 μF 25V 20% X5R SMD 0603| Yes| Murata| GRM188R61E106MA73D
9| 8| C33, C34, C35, C44, C46, C55, C56, C61| CAP CER 4.7 μF 6.3V 20% X5R SMD 0402| Yes| Murata| GRM155R60J475ME47D
10| 4| C36, C57, C58, C59| CAP CER 10 μF 6.3V 20% X5R SMD 0603| Yes| Kyocera AVX| 06036D106MAT2A
11| 1| C52| CAP CER 10000 pF 16V 10% X7R SMD 0402| Yes| KEMET| C0402C103K4RACTU
12| 1| C53| CAP CER 1 μF 16V 10% X5R SMD 0402| Yes| TDK| C1005X5R1C105K050BC
13| 1| C60| CAP CER 33 pF 50V 5% NP0 SMD 0402| Yes| Murata| GRM1555C1H330JA01D
14| 1| C68| CAP CER 2200 pF 25V 5% C0G SMD 0402| Yes| KEMET| C0402C222J3GACTU
15| 2| C69, C70| CAP CER 47 μF 10V 20% X5R SMD 1206| DNP| KEMET| C1206C476M8PACTU
16| 1| C71| CAP ALU 120 μF 20V 20% SMD C6| DNP| Panasonic| 20SVPF120M
17| 2| C72, C73| CAP CER 47 μF 10V 20% X5R SMD 1206| Yes| KEMET| C1206C476M8PACTU
18| 1| C76| CAP CER 0.1 μF 50V 10% X7R SMD 0402| DNP| TDK| C1005X7R1H104K050BB
19| 8| D1, D2, D3, D4, D5, D6, D7, D9| DIO LED GREEN 2V 30 mA 35 mcd Clear SMD 0603| Yes| Vishay Lite-On| LTST-C191KGKT
20| 1| D8| DIO RECT MMBD914-7-F 1.25V 200 mA 75V SMD SOT-23-3| Yes| Diodes| MMBD914-7-F
21| 1| F1| RES FUSE 4A 125 VAC/VDC FAST SMD 2-SMD| Yes| Littelfuse| 0154004.DR
22| 1| FB1| FERRITE 220R@100 MHz 2A SMD 0603| Yes| Murata| BLM18EG221SN1D
23| 1| FB3| FERRITE 500 mA 220R SMD 0603| Yes| Murata| BLM18AG221SN1D
24| 8| J1, J4, J9, J10, J11, J12, J15, J16| CON HDR-2.54 Male 1×2 AU 5.84 MH TH VERT| Yes| Samtec| TSW-102-07-G-S
25| 1| J2| CON HDR-2.54 Male 1×8 Gold 5.84 MH TH| Yes| AMPHENOL ICC (FCI)| 68001-108HLF
26| 4| J3, J6, J7, J17| CON HDR-2.54 Male 1×3 AU 5.84 MH TH VERT| Yes| Samtec| TSW-103-07-G-S
27| 1| J5| CON USB3.0 STD B Female TH R/A| Yes| Wurth Electronics| 692221030100
28| 1| J8| CON RF Coaxial MMCX Female 2P TH VERT| DNP| Bel Johnson| 135-3701-211

TABLE C-1:BILL OF MATERIALS (CONTINUED)

29| 1| J13| CON STRIP High Speed Stacker 6.36mm Female 2×50 SMD VERT| Yes| Samtec| QSS-050-01-L-D-A-GP
---|---|---|---|---|---|---
30| 1| J14| CON JACK Power Barrel Black Male TH RA| Yes| CUI Inc.| PJ-002BH
31| 1| J18| CON HDR-2.54 Male 2×3 Gold 5.84 MH TH VERT| Yes| Samtec| TSW-103-08-L-D
32| 1| L1| INDUCTOR 3.3 μH 1.6A 20% SMD ME3220| Yes| Coilcraft| ME3220-332MLB
33| 1| L3| INDUCTOR 470 nH 4.5A 20% SMD 1008| Yes| ICE Components| IPC- 2520AB-R47-M
34| 1| LABEL1| LABEL, ASSY w/Rev Level (small modules) Per MTS-0002| MECH| —| —
35| 4| PAD1, PAD2, PAD3, PAD4| MECH HW Rubber Pad Cylindrical D7.9 H5.3 Black| MECH| 3M| 70006431483
36| 7| R1, R2, R5, R7, R11, R25, R27| RES TKF 10k 5% 1/10W SMD 0603| Yes| Panasonic| ERJ-3GEYJ103V
37| 1| R3| RES TKF 1k 5% 1/10W SMD 0603| Yes| Panasonic| ERJ-3GEYJ102V
38| 8| R4, R9, R28, R35, R36, R44, R46, R59| RES TKF 1k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ3EKF1001V
39| 1| R6| RES TKF 2k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF2001V
40| 5| R8, R13, R22, R53, R61| RES TKF 0R 1/10W SMD 0603| Yes| Panasonic| ERJ- 3GEY0R00V
41| 2| R10, R55| RES TKF 100k 1% 1/10W SMD 0603| Yes| Vishay| CRCW0603100KFKEA
42| 1| R12| RES MF 330R 5% 1/16W SMD 0603| Yes| Panasonic| ERA-V33J331V
43| 7| R14, R15, R16, R17, R18, R19, R21| RES TKF 22R 1% 1/20W SMD 0402| Yes| Panasonic| ERJ-2RKF22R0X
44| 1| R20| RES TKF 12k 1% 1/10W SMD 0603| Yes| Yageo| RC0603FR-0712KL
45| 1| R23| RES TKF 10k 5% 1/10W SMD 0603| DNP| Panasonic| ERJ-3GEYJ103V
46| 1| R24| RES TKF 40.2k 1% 1/16W SMD 0603| Yes| Panasonic| ERJ-3EKF4022V
47| 1| R26| RES TKF 20k 5% 1/10W SMD 0603| Yes| Panasonic| ERJ-3GEYJ203V
48| 2| R29, R52| RES TKF 0R 1/10W SMD 0603| DNP| Panasonic| ERJ-3GEY0R00V
49| 3| R31, R40, R62| RES TKF 20k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ3EKF2002V
50| 5| R33, R42, R49, R57, R58| RES TKF 10k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF1002V
51| 1| R34| RES TKF 68k 1% 1/10W SMD 0603| Yes| Stackpole Electronics| RMCF0603FT68K0
52| 1| R41| RES TKF 107k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF1073V
53| 1| R43| RES TKF 102k 1/10W 1% SMD 0603| Yes| Stackpole Electronics| RMCF0603FT102K
54| 1| R45| RES TKF 464k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF4643V
55| 1| R47| RES TKF 10k 1% 1/10W SMD 0603| DNP| Panasonic| ERJ-3EKF1002V
56| 1| R48| RES TKF 10R 1% 1/10W SMD 0603| Yes| Stackpole Electronics| RMCF0603FT10R0
57| 1| R50| RES TKF 1.37k 1% 1/10W SMD 0603| Yes| Yageo| RC0603FR-071K37L
58| 1| R51| RES TKF 510k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF5103V
59| 1| R54| RES TKF 1.91k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF1911V
60| 1| R56| RES TKF 22R 1% 1/10W SMD 0603| Yes| Yageo| RC0603FR-0722RL
61| 1| R60| RES TKF 2.2k 1% 1/10W SMD 0603| Yes| Panasonic| ERJ-3EKF2201V

TABLE C-1:BILL OF MATERIALS (CONTINUED)

62| 1| SW1| SWITCH TACT SPST-NO 16V 0.05A PTS810 SMD| Yes| ITT C&K| PTS810SJM250SMTRLFS
---|---|---|---|---|---|---
63| 1| SW2| SWITCH SLIDE SPDT 120V 6A 1101M2S3CQE2 TH| Yes| ITT C&K| 1101M2S3CQE2
64| 1| TP1| MISC, TEST POINT MULTI PURPOSE MINI BLACK| DNP| Terminal| 5001
65| 1| TP2| MISC, TEST POINT MULTI PURPOSE MINI WHITE| DNP| Keystone Electronics| 5002
66| 1| U1| MCHP MEMORY SERIAL EEPROM 4k Microwire 93AA66C-I/SN SOIC-8| Yes| Microchip| 93AA66C-I/SN
67| 3| U2, U4, U7| 74LVC1G14GW,125 SCHMITT-TRG INVERTER| Yes| Philips| 74LVC1G14GW,125
68| 1| U3| MCHP INTERFACE ETHERNET LAN7801-I/9JX QFN-64| Yes| Microchip| LAN7801T-I/9JX
69| 1| U5| IC LOGIC 74AHC1G08SE-7 SC-70-5| Yes| Diodes| 74AHC1G08SE-7
70| 1| U6| IC LOGIC 74AUP1T04 SINGLE SCHMITT TRIGGER INVERTER SOT-553| Yes| Nexperia USA Inc.| 74AUP1T04GWH
71| 2| U8, U10| MCHP ANALOG LDO ADJ MCP1826T-ADJE/DC SOT-223-5| Yes| Microchip| MCP1826T-ADJE/DC
72| 1| U11| MCHP ANALOG SWITCHER ADJ MIC23303YML DFN-12| Yes| Microchip| MIC23303YML-T5
73| 1| U12| MCHP ANALOG SWITCHER Buck 0.8-5.5V MIC45205-1YMP-T1 QFN-52| Yes| Microchip| MIC45205-1YMPT1
74| 1| Y1| CRYSTAL 25MHz 10pF SMD ABM8G| Yes| Abracon| ABM8G-25.000MHZ-B4Y-T

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DS50003225A-page 28
© 2021 Microchip Technology Inc. and its subsidiaries
09/14/21

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