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Summary & Details

Road vehicles – Clock eXtension Peripheral Interface (CXPI) – Part 7: Subset protocol specification & protocol conformance test specification

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Format: PDF

Price: Non-members (tax incl.)：￥3,300 Members (tax incl.)：￥2,640

Paper/Info type: JASO Standards: D - Electrical equipment

No.D015-7-25

Date of publication: Mar 2025

Publisher: JSAE

Language: English

Detailed Information

Scope	This standard describes subset specifications for realizing CXPI communication using dedicated ICs for special applications without using a microcontroller unit (MCU) at diagnostic class I slave nodes. These specifications apply to ISO 20794-2 and ISO 20794-4, which specify the CXPI communication protocol mainly in the field of human machine interfaces (HMIs) of automotive electronic systems. This standard also describes the tests used to confirm compliance with these subset specifications. In addition, this standard also applies to low-performance MCUs (legacy).

Scope

This standard describes subset specifications for realizing CXPI communication using dedicated ICs for special applications without using a microcontroller unit (MCU) at diagnostic class I slave nodes. These specifications apply to ISO 20794-2 and ISO 20794-4, which specify the CXPI communication protocol mainly in the field of human machine interfaces (HMIs) of automotive electronic systems. This standard also describes the tests used to confirm compliance with these subset specifications. In addition, this standard also applies to low-performance MCUs (legacy).

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