PCB level diagnostic

AN3044

12/20

Doc ID 16196 Rev 2

3.4

Summary for PCB level diagnostic

The table below is summarizing the different possibilities for PCB level diagnostic.

Table 2.

PCB level diagnostic

Comments

SPC56x traceability

info from protected

Flash

3 different options proposed with 2 not

requiring to distribute the Flash password:

either use specific diagnostic software either

use serial boot mode with a specific

sequence.

Connection

to ECU’s PCB

JTAG (connector only populated for PCB

level self tests).

JTAG on PCB test points

or not populated JTAG connector

Communication

interfaces when using

third party tools

JTAG, CAN, UART, FlexRay

Communication

interface when using

ST tools

JTAG

ECU software

for self tests #1

User software using application specific

diagnostic mode.

Diagnostic mode can be selected by using

GPIO.

Diagnostic can send traceability

information and run small ECU self tests

software.

ECU software

for self tests #2

Software uploaded in SPC56x RAM

Requires to have access to JTAG.

Very flexible scheme for loading and

executing self tests with specific sequence

for reading traceability information.

Proposed tools #1

Third party tools (Vector, Etas, lauterbach,

PLS, iSystem..) that allows connection to the

selected communication interface.

Proposed tools #2

ST JTAG tool + Raisonance debugger