ETH Ethernet MAC - AURIX Microcontroller Training V1.0 2019-03 - Infineon Technologies
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ETH
Ethernet MAC
AURIX™ Microcontroller Training
V1.0 2019-03
Please read the Important Notice and Warnings at the end of this documentETH
Ethernet MAC
TCP/IP Tx FIFO Rx FIFO
Highlights
Stack (2KB) (2KB)
› The Ethernet core supports
Tx Flow Rx Flow
Ethernet
MAC
PHY 10/100 Mbit/s data transfer rates
Control Control
10/ 100 Mbps
RMII/ MII which is compliant with IEEE 802.3
DMA
› Allows an external Fast Ethernet
DMA
CSR
OMR
Reg
PHY interface with RMII/MII
Key Features Customer Benefits
Automatic CRC and pad generation › User does not have to take care of CRC
calculation and pad insertion
Flexible address filtering modes › Auto checking of the destination and
source address of receive frame
Support Ethernet frame time stamping › Better accuracy to synchronize clocks
throughout a network
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 2ETH
Automatic CRC and pad generation
› CRC and Pad generation for Transmission frame
– When the number of bytes received falls below 60 bytes, the state machine
automatically appends zeros to the Tx frame to make the data length exactly
46 bytes.
– The Transmit CRC Generator module calculate the CRC for the Frame Check
Sequence (FCS) field before transmission to the TPE module.
Ethernet
Core
Transmit CRC
Generator ( CTX) Automatic CRC and pad generation
State machine
( DA+ SA+ LT+ DATA) < 60 bytes
Data = 46 bytes
Frame Check Ethernet Transmission Frame
Pad
Sequence CRC Type / Source Destination
Payload / Data SFD Preamble
Length address address
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 3ETH
Flexible address filtering modes
› The Address Filtering (AFM) module performs the destination and source address checking
function on all received frames and reports the address filtering status to the Receive Frame
Controller module.
› The Receive Frame Controller (RFC) module performs frame filtering based on the
destination/source address.
Ethernet Core
Filtering status
Receive Frame Controller Module
(AFM)
Unicast Destination
(AFM)
Address filter
Module
Multicast Destination
Filtering module
Address filter Preamble
Destination Source
Ethertype Data CRC
MAC address MAC address
Hash or Perfect Filter
AddressFiltering
Disable all Broadcast Filter
Unitcast Source Address
Filter
Address
Inverse Filtering Operation
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 4ETH
Ethernet frame time stamping
› If IEEE 1588 time stamping is enabled for the transmit frame, this block takes a snapshot of
the system time when the SFD is put onto the transmit MII bus.
› The time stamping feature can be use in Precision Time Protocol to synchronize clock
thought out a network of rotary encoder and control stepping motor at required timing.
Slave
Microcontroller
PHY
PTP Logic
Master
Ethernet MAC
Slave
Ethernet
frame Microcontroller
MII / PHY
Time Stamp…
.. PHY
RMII
PTP Logic
Time Stamping
Slave
Microcontroller
PHY
PTP Logic
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 5ETH
System integration
The Ethernet MAC can make use of
the internal Flash/RAM for data
storage and handling. The internal
RAM is used as well for DMA
Transmit / Receive descriptors and RAM ETH Interrupt Router
Ethernet Frame storage. The
DMA
Interrupt Router handles all request Transmit /
Software
Receive
coming from the Ethernet, as descriptors RTOS/TCP IP
example a received frame FLASH ADC GPIO
notification. Combined with the RAM GTM LED
automotive AUTOSAR™ software ASCLIN
new Applications can be developed. Data storage Sensors Actuators
Faster ECU Firmware updates,
Service oriented communication via
SOME/IP or Service and diagnosis
via DoIP are just some examples.
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 6Application example
Firmware updates of multiple ECUs
AURIX™ TC2xx
AUTOSAR™
Host PHY ETH MAC PDU router CAN-FD CAN ECUs
TCP IP stack CAN
Overview Advantages
› Firmware updates in cars can make use › The Ethernet MAC allows with the high
of Ethernet to exchange data much speed data transfer to update multiple
faster compared to other existing ECUs in parallel in a car
communication interfaces
› The faster update time saves money at
line end programming and in field garage
firmware updates
2019-03-27 Copyright © Infineon Technologies AG 2019. All rights reserved. 7Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2019-03 IMPORTANT NOTICE For further information on the product,
Published by The information given in this document shall in no technology, delivery terms and conditions and
Infineon Technologies AG event be regarded as a guarantee of conditions or prices please contact your nearest Infineon
81726 Munich, Germany characteristics (“Beschaffenheitsgarantie”) . Technologies office (www.infineon.com).
With respect to any examples, hints or any typical
© 2019 Infineon Technologies AG. WARNINGS
values stated herein and/or any information
All Rights Reserved. Due to technical requirements products may
regarding the application of the product, Infineon
contain dangerous substances. For information
Technologies hereby disclaims any and all
Do you have a question about this on the types in question please contact your
warranties and liabilities of any kind, including
document? nearest Infineon Technologies office.
without limitation warranties of non-infringement
Email: erratum@infineon.com
of intellectual property rights of any third party. Except as otherwise explicitly approved by
Infineon Technologies in a written document
Document reference In addition, any information given in this
signed by authorized representatives of Infineon
AURIX_Training_1_Ethernet_MAC document is subject to customer’s compliance
Technologies, Infineon Technologies’ products
with its obligations stated in this document and
may not be used in any applications where a
any applicable legal requirements, norms and
failure of the product or any consequences of the
standards concerning customer’s products and
use thereof can reasonably be expected to result
any use of the product of Infineon Technologies in
in personal injury.
customer’s applications.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer’s technical
departments to evaluate the suitability of the
product for the intended application and the
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