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Trinamic TMC8462A-BA, TMC8462A-BOB-ETH, TMC8462A-EVAL User guide

  • Hello! I'm your chat assistant. I've analyzed the provided application note regarding the migration from the TMC8462-BA to the TMC8462A-BA EtherCAT Slave Controller. This document outlines key changes, such as the corrected PHY configuration, improved ESD ratings, and adjustments to the master clock and pin connections. I'm ready to assist you with any specific questions you may have about these changes or the migration process.
  • What is the purpose of this document?
    What are the key changes in TMC8462A-BA?
    Is the TMC8462A-BA compatible with the TMC8462-BA?
APPLICATION NOTE
©2022 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Download newest version at: www.trinamic.com
AN080: TMC8462A-BA Migration Guide from TMC8462-BA
Document Revision V1.00 •2022-Nov-15
Contents
1 Introduction 1
2 Changes 1
3 Compatibility 2
4 Revision History 2
1 Introduction
EtherCAT is an industrial real-time Ethernet bus. It relies on the standard Ethernet physical layer and re-
quires dedicated interface ICs – so-called EtherCAT Slave Controllers (ESC) – to handle the Datalink layer
EtherCAT protocol.
TRINAMIC’s TMC8462-BA ESC was EOL-ed and is replaced with the TMC8462A-BA (A-version).
This migration guide lists the differences of the non-A and A-version of TRINAMIC’s EtherCAT Slave Con-
troller Chip (ESC) TMC8462-BA and TMC8462A-BA and how to successfully migrate to the A-version TMC8462A-
BA.
2 Changes
The following changes apply from TMC8462-BA to TMC8462A-BA:
•Revision field of IC label changes to “A”: TMC8462-BA to TM8462A-BA
•Corrected Case 1 in the Errata of TMC8462-BA Datasheet V1.6:
–Fix: The PHY configuration was changed to the proper mode setting. The LINK/ACT LEDs and
link indicator signal will not show a start-up pulse anymore and will thus not increase link-loss
counters unnecessarily.
•ESD ratings improved/updated: HBM 2.5kV, CDM 750V
•Master clock input changes from 100MHz to 25MHz
•Pin name L3 changes from REF_CLK100_IN to REF_CLK25_IN
•TMC8462A-BA requires pin TSTCLK_SELECT connected to GND for standard operation
•Temperature ratings corrected based on PHY specs
AN080: TMC8462A-BA Migration Guide from TMC8462-BA •Application Note •Document Revision V1.00 •2022-Nov-15 2/2
3 Compatibility
The new revision TMC8462A-BA will work in the same circuit as the TMC8462-BA version. Anyhow, it
is recommended to qualify the new TMC8462A-BA within the existing design and application for series
production.
We recommend adapting the circuit/layout to properly migrate to the new TMC8462A-BA version as given
below:
•Replace TMC8462A-BA external reference clock source. Use 25MHz instead of 100MHz.
•Connect pin TSTCLK_SELECT to GND instead of VCCIO / +3.3V.
The following items remain unchanged:
•No change in package type and package mechanical dimensions
•No change in control software or slave configuration
•Absolute maximum electrical ratings unchanged
•Assembly and test facility stay unchanged
4 Revision History
Version Date Author Description
V1.00 15.11.2022 SK Initial release
Table 1: Document Revision
©2022 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com
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