L9788 datasheet(146/264 Pages) STMICROELECTRONICS

Part #	L9788

Description	Multifunction IC for automotive engine management system

PDF	264 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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146 / 264 page

CAN FD interface

L9788

146/264

DS12308 Rev 4

CAN FD interface

Figure 66. CAN FD interface diagram

The pins related to this block are:



CANH;



CANL;



CANTX;



CANRX;



GND_CAN;



VB_CAN;



VDD_CAN

VDD_CAN= 5V is the supply for the CAN transceiver block. The voltage on this pin is

monitored and if the voltage is below VDD_CAN_SUP_LOW for a tcansuplow filter time an

undervoltage fault on VDD_CAN is detected. The fault is latched in a dedicated MSC flag

CAN_SUP_LOW until an MSC Upstream Read14 is given. While the undervoltage fault is

detected on VDD_CAN the CAN transmitter stays disabled (not MSC read clear access is

necessary to restore the transmitter just the fault detection expiration).

RX_ECHO

CAN_ON

VDD_CAN

CAN_TX

CAN_RX

VDD_CAN

CANL

GND_CAN

CANH

V3V3_EOT

V3V3_DIG

DIG

V5V

CAN_LOGIC

CAN_OSC

VDD_CAN

OV / UV

MSC_BIT

GADG0912161250PS

L9788 Datasheet(PDF) 146 Page - STMicroelectronics

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