AN4266 datasheet(67/76 Pages) STMICROELECTRONICS

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AN4266

Scenarios for automotive applications: Motor control

Doc ID 024283 Rev 2

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5.3.2

Functional safety related outputs

Non-maskable

interrupt

NMI(1)

External

component

(ASIC)

Wake-up Unit

Critical interrupt routine or

error/fault signal coming from

external device.

Reset signal

RESET B

External

component

(ASIC,

companion chip)

MC_RGM

Reset signal coming from external

device.

Incremental Encoder

management

ETC[0–1]

Incremental

encoder

eTimer_0

eTimer_1

Precautions for usage are

presented in Section , Double

Read Encoder Inputs.

Hall sensors

management

ETC[2–4]

Hall sensors

eTimer_0

eTimer_1

Precautions for usage are

presented in Section , Double

Read PWM Inputs.

DSPI receive signal

SIN

External

component

(ASIC)

DSPI_0

If DSPI_0 is used, an appropriate

safety protocol must be utilized.

DSPI receive signal

SIN

External

component

(ASIC)

DSPI_1

If DSPI_1 is used, an appropriate

safety protocol must be utilized.

FlexCAN receive

signal

CAN_RX

External

component

(ASIC)

FlexCAN_0

If FlexCAN_0 is used, an

appropriate safety protocol must

be utilized.

FlexCAN receive

signal

CAN_RX

External

component

(ASIC)

FlexCAN_1

If FlexCAN_1 is used, an

appropriate safety protocol must

be utilized.

FlexRay receive

signals

FR_CA_RX

FR_CB_RX

External

component

(ASIC)

FlexRay

If FlexRay is used, an appropriate

safety protocol must be utilized.

The NMI input is not intended or certified for use as the sole mechanism to react to the failure of a system component

external to the SPC56xL70xx device. For ASIL D certification, additional measures at the system level are necessary to

handle failures of non-SPC56xL70xx components beyond notification of the SPC56xL70xx device via NMI.

Table 18.

Functional safety inputs for application example 3 (continued)

Signal description

Input signal

(alias)

Source

Destination

(module on

SPC56xL70xx)

Comments

Table 19.

Functional safety outputs for application example 3

Signal

description

Output signal

(alias)

Source

(module on

SPC56xL70xx)

Destination

Comments

FCCU output

FCCU_F[0]

FCCU

External

component

(ASIC)

Error out signal, that indicates the

presence of a failure in the device.

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