Arrangement and method for connecting various integrated circuits in an automotive control system

Patent metadata

Field	Value
Publication number	US-2020127872-A1
Application number	US-201816621671-A
Country	US
Kind code	A1
Filing date	Jun 14, 2018
Priority date	Jun 14, 2017
Publication date	Apr 23, 2020
Grant date	—

Abstract

The invention relates to an arrangement and a method performing data exchange between various integrated circuits, IC, (3,4,5,6,7) in an automotive control system wherein the data are exchanged by a bus and has the object to enable ASIL C/D system coverage and to tie various ICs (clocks, regulators, memory interfaces, sensor signal conditioners, power management ICs etc.) This is solved the data are exchanged by a bus being ASIL C/D compliant and forming a common protocol to exchange information among the integrated circuits (3,4,5,6,7). The method is solved by functions implemented within the bus as setting the frequency of operation; arbitrating roles of the integrated circuits as master or slave device; checking integrity of exchanged data; frame repetition; detecting bus stuck- at failure modes; filtering or denouncing failures and warnings from peripheral devices; detecting remote out of specification local clock; and monitoring and predicting system reliability and profiling maintenance events.

First claim

1 - 12 . (canceled)

13 . An arrangement for connecting various integrated circuits in an automotive control system wherein at least two integrated circuits are connected by a bus being ASIL C/D compliant and forming a common bus protocol to exchange information among the integrated circuits, the arrangement comprising:
a means for setting the frequency of operation; a means for arbitrating roles of the integrated circuits as master or slave device; a means for checking integrity of exchanged data; a means for frame repetition, which periodically gathers failures data information from each slave by a broadcast-inquiring by the master; a mechanism to detect bus stuck-at failure modes; a mechanism to filter or denounce failures and warnings from peripheral devices; a means for detecting remote out of specification local clock; and a means for monitoring and predicting system reliability and profiling maintenance events.

14 . The arrangement of claim 13 , wherein the bus is configured as a single wire interface bus.

15 . The arrangement of claim 13 , wherein the bus is configured to exchange telemetry information.

16 . The arrangement of claim 15 , wherein the bus is designed to exchange information about temperature, voltage, current, fault conditions, warnings, frequency or mode of operation.

17 . The arrangement of claim 13 , wherein the bus protocol is provided with an additional protocol layer implementing industry standard interfaces such as I2C, PMBUS, SMBUS, SVID, SPI, SCSI, PCIe or USB.

18 . The arrangement of claim 13 , wherein a power management IC (PMIC) is connected with one or more digital processing units (DPU) via the bus.

19 . The arrangement of claim 18 , wherein the power management IC (PMIC) is connected to an automotive SoC whereby the bus is safe controlling power delivery to the automotive SoC.

20 . A method of performing data exchange between various integrated circuits in an automotive control system wherein the data are exchanged by a bus being ASIL C/D compliant and forming a common protocol to exchange information among the integrated circuits comprising the steps of
setting the frequency of operation; arbitrating roles of the integrated circuits as master or slave device; checking integrity of exchanged data; frame repetition, i.e. periodically gathering failures data information from each slave by a broadcast-inquiring by the master; detecting bus stuck-at failure modes; filtering or denouncing failures and warnings from peripheral devices; detecting remote out of specification local clock; and monitoring and predicting system reliability and profiling maintenance events.

21 . The method of claim 20 , wherein telemetry information is exchanged.

22 . The method of claim 21 , wherein information about temperature, voltage, current, fault conditions, warnings, frequency or mode of operation is exchanged.

23 . The method of claim 20 , wherein the bus protocol is provided with an additional protocol layer implementing industry standard interfaces such as I2C, PMBUS, SMBUS, SVID, SPI, SCSI, PCIe or USB.

24 . The method of claim 20 , wherein a power delivery to an automotive SoC is performed using safe controlling.

Assignees

• Integrated Device Tech

Inventors

• Singh Manjit
• Dl Matteo Serge
• Krellner Jan
• Kwok Kenneth C

Classifications

• G06F11/0745

  in an input/output transactions management context (input/output processing in general G06F13/00) · CPC title

• H04L12/40065

  Bandwidth and channel allocation (home automation networks H04L12/2803; flow control H04L47/10) · CPC title

• H04L12/40104

  Security; Encryption; Content protection (cryptographic protocols H04L9/00; protocols for network security H04L63/00) · CPC title

• H04L2012/4026

  Bus for use in automation systems · CPC title

• H04L12/40078

  Bus configuration (home automation networks H04L12/2803; arrangements for maintenance or administration H04L41/00) · CPC title