RIF
Radar interface
AURIX™ TC3xx Microcontroller Training
V1.0 2020-06
Please read the Important Notice and Warnings at the end of this document
RIF
Radar Interface
Key Features Customer Benefits
Highlights
› The RIF is responsible for the interface
between the Radar ADC (Internal or
External) and an SPU module
› The RIF handles formatting the incoming
data so it matches the SPU RIF input
format
› The RIF can assert a safe communication
with external ADC and SPU
Input selection
Data formatting
› Compatibility with many MMIC and not
only Infineon products
› Wide range of data formats can be used
› Enabling ASIL-B radar processingSafety features
RIF
SPU
Internal ADC
LVDS
0
1
Formatting
Frame wd
IR
Dual RIF
synchro
INT
ERR
BBB
Reg config
CRC
2
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
RIF
Input selection
› The RIF can retrieve the data from up to 4 channels
› The data can come either from internal ADC or external ADC via LVDS
lines
AURIX™ TC3xx
Internal
ADC
RF
Front-End
RF
Front-End
External
ADC
LVDS
RIF
0
1
SPU
3
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
RIF
Data formatting
› SPU expects 16bit signed Qm.n integers as an input from the RIF, which
are delivered to the SPU in 32bit packet
› On the other hand, the RIF accepts a wider range of formats and is
responsible for adjusting the direction (lsb/msb), data length (16 bits) and
format of the incoming ADC data so it fits the SPU RIF input format
External
ADC
Internal
ADC
RIF
SPU
› uint 10-16 bit
› int 10-16 bit
› signed/unsigned
Q1.9, Q1.11,
Q1.13
› unsigned fixed
point Q1.15
› uint 12 bit
16bit signed Qm.n integer
4
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
RIF
Safety features
› In order to enable up to ASIL-B safety requirements, the RIF implements
several safety features:
– For external ADC: the possibility to add a CRC check at the end of every
ramp
– Safety critical configuration register can be CRC checked
– CRC check can be added to the output data of the RIF in order to assert
safe communication with the SPU
– Partial Lockstep: certain safety critical sub-blocks are duplicated to create
redundancy. If enabled, an alarm can be raised in case of mismatch
SPU
RIF
External ADC
Serial CRC
RIGISTER CRC
Partial lockstep
SPU CRC
5
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
RIF
System integration
RIF
Internal
ADC
LVDS
SPU
BBB
Register File
IR
CPUs
DMA
INT
ERR
› The RIF is connected to the internal ADC, the LVDS pad and the SPU in
order to enable ADC data transfers
› The RIF is capable of communicating events and errors to the application
via several Interrupt and Error lines through the Interrupt router
6
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
Application example
Radar frame reception
› In this example, the RIF is programmed to receive a frame from 4
channels
RIF SPUADC
1
1. Receiving a complete frame from 4 channels
2. Signaling a frame is ready to be transmitted
3. Transmit the formatted frame in 32bit packets to the SPU
2
3
7
2020-06-05 Copyright © Infineon Technologies AG 2020. All rights reserved.
IMPORTANT NOTICE
The information given in this document shall in no
event be regarded as a guarantee of conditions or
characteristics (“Beschaffenheitsgarantie”).
With respect to any examples, hints or any typical
values stated herein and/or any information
regarding the application of the product, Infineon
Technologies hereby disclaims any and all
warranties and liabilities of any kind, including
without limitation warranties of non-infringement
of intellectual property rightsof any third party.
In addition, any information given in this
document is subject to customer’s compliance
with its obligations stated in this document and
any applicable legal requirements, norms and
standards concerning customer’s products and
any use of the product of Infineon Technologies in
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
completeness of the product information given in
this document with respectto suchapplication.
For further information on the product,
technology, delivery terms and conditions and
prices please contact your nearest Infineon
Technologies office (www.infineon.com).
WARNINGS
Due to technical requirements products may
contain dangerous substances. For information
on the types in question please contact your
nearest Infineon Technologies office.
Except as otherwise explicitly approved by
Infineon Technologies in a written document
signed by authorized representatives of Infineon
Technologies, Infineon Technologies’ products
may not be used in any applications where a
failure of the product or any consequences of the
use thereof can reasonably be expected to result
in personal injury.
Edition 2020-06
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2020 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about this
document?
Email: erratum@infineon.com
Document reference
AURIX_Training_1_Radar_Interface
Trademarks
All referenced product or service names andtrademarksare the propertyof their respective owners.
Loading...