SAE J2602-1 2005 LIN Network for Vehicle Applications(13)

LIN Network for Vehicle ApplicationsIssued 2004-08Revised 2005-09Superseding J2602-1 AUG2004

SAE J2602-1 Revised SEP2005

Support of diagnostics and configuration as defined in the LIN Diagnostic and Configuration Specification in the LIN 2.0 Specification Package is OPTIONAL in J2602 nodes. In other words, support of the services defined as mandatory in Section 2.5 of the LIN Diagnostic and Configuration Specification is optional and is NOT required for J2602 compliance. The following sections define the required SAE J2602 node configuration command/response messages. 5.7.1 5.7.1.1 GENERAL CONFIGURATION REQUIREMENTS Slave Execution of Configuration

Within the limit of its capabilities, a slave device shall immediately execute any configuration command upon receipt of the$3C message; it shall not wait for a$3D message. 5.7.1.2 Slave Device Configuration Capabilities

A NCF file shall be included with a SAE J2602 device. 5.7.1.3 Master Configuration Message Pairing

A master shall always transmit$3C/$3D coupled pairs. The master shall never send multiple successive$3C messages without corresponding (interleaved)$3D messages. There shall be exactly one$3D response for each$3C command. The only exception to this is in the case of a broadcast$3C message which shall have no corresponding$3D message. 5.7.2 5.7.2.1 NAD AND MESSAGE ID ASSIGNMENT NAD Assignment

The NAD for a J2602 device shall be in the range$60 to$6D, where the lower nibble of the J2602 NAD contains a four bit Device Node Number (DNN). An uninitialized node shall have a NAD of$6F. A NAD of$6E may be used; however, its message IDs must be assigned via$3C or$3E messages. IC manufacturers may provide the ability to select the desired Device Node Number, and hence the NAD, based on up to four memory bits, four external pins, etc. These bits or pins shall only impact the value of the lower nibble of the NAD. If the device has a selectable NAD, it shall default to$6F prior to initialization. J2602 NADBit 7 (msb) 0 6 1 5 1 4 0 3 DNN3 2 DNN2 1 DNN1 Bit 0 (lsb) DNN0

- 13 Author:Gilligan-SID:9234-GUID:35989776-155.69.4.4

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