TJA1443A无法进入Listen-only或者sleep等其他模式

[harryoceana]

MCU: s32k344  使用TJA1443A

RTD3.0.0

1. 我将TJA1443A的stb和en引脚拉高，可以正常收发数据，但是我将stb引脚拉高en引脚拉低，外接的can卡无法向总线发送数据，S32K344的CAN中断也没有进入。应该怎么才能正确进入Listen-only模式呢？

2. TJA1443A sleep的情况下，外接CAN卡是否能够发送数据成功，假设总线只有这两个设备，有终端电阻

[guoweisun]

HI 

从nomral 跟standby模式进入listen only的条件是一样的请看下面：

你要确认进入listen only之前的状态是什么，然后再判读是否进入listen only模式：

A HIGH level on pin STB_N and a LOW level on pin EN selects Listen-only mode,
provided VBAT and VIO are present. Pin INH remains HIGH, so voltage regulators
controlled by pin INH will also be active.
In Listen-only mode the receiver is enabled, but the transmitter is disabled.

2：In Sleep mode, the transceiver behaves as described for Standby mode, with the
exception that pin INH is set high-ohmic.

In Standby Mode the TJx1443 is not capable of transmitting and receiving regular CAN
messages, but it monitors the bus for CAN messages.

是无法收发CAN信息的在sleep下。