CAN_H Voltage for TJA1043 when in sleep mode

[water9301]

Hi NXP supporting team,

I am facing one issue reagarding to the CAN_L and CAN_H volgtage when the TJA1043 devices is in sleep mode.

Attachment is the waveform i collected from oscilloscope.

It shows the CAN_L is from -1.5V to 0V, and CAN_H is from 0V to 1.5V, data decodes that is NACK error, represents that transceiver is in sleep mode. 

So is it normal?

[water9301]

when receive the can frame from the bus, what's the voltage leverl for CAN_H and CAN_L?

[guoweisun]

In Sleep Mode the transceiver provides the following functions:
• The CAN transmitter is off.
• The normal CAN receiver is off.
• The local and bus wakeup function are active.
• INH is floating (lowest leakage current on INH pin).
• CANH and CANL are biased to GND.
• SPLIT is floating (lowest leakage current on SPLIT pin).