L9788 datasheet(153/264 Pages) STMICROELECTRONICS

153 / 264 page

DS12308 Rev 4

153/264

L9788

CAN FD interface

263

When the CAN transceiver is in normal mode and at least one of the above faults occurs the

transmitter is disabled.

Reset matrix *10 source means that at least one of the following faults is active and the

CAN_TDI bit is set:



ERR_CNT>4;



ERR_CNT>7;



RST_PRL;

When the CAN transceiver is in normal mode and at least one of the above faults occurs the

transmitter is disabled.

Reset matrix *13 source means that at least one of the following faults is active:

VB_STBY_UV

VB_OV t>TBOV2

VB_UV

V3V3A_OV, V3V3A_UV, V3V3D_OV and V3V3D_UV

VDD5_UV

VDDIO_UV

When the CAN transceiver is in normal mode and at least one of the above faults occurs the

MSC bit CAN_EN is cleared sending the CAN transceiver in Low-power Mode.

12.11

CAN looping mode

If the proper configuration bit (CAN_LOOP_EN) in control register is set the TxDC input is

mapped directly to the RxDC Pin. This mode can be used in combination with the CAN

receive-only mode, to run diagnosis for the CAN protocol handler of the microcontroller.

Figure 69. CAN_TX input structure

GADG0912161539PS

V3V3

VHIGH

Input structures: cascoding to

sustain battery level

VLOW

L9788 Datasheet(PDF) 153 Page - STMicroelectronics