大家好！工作后的MCP2515，我正在尝试MCP25625（与Trimiver集成），但我正面临着一个大问题，我不能与它沟通，MISO停留在0V…这里是我的配置：-3.3V在引脚3一个11（VDD和VIO），5V的Pin 19（VDDA）-！重置（Pin 2）和STEBE（PAN15）不连接（失败后，我测试了许多配置）- MISO MOSI，CS和CSK连接到PIC24FJ-OSC1，连接到PIC24的CKOUT，OSC2下拉（3K3）-TXD连接到TXCAN-RXD，连接到RXCAN-CANL和CANH OPEN ONSO，所以我检查了PIC24的信号，所有的OK（时钟、CS和MOSI）从500千赫到8MHz的时钟速度OSC1被16MHz的信号正确地驱动，在OSC2i上没有检查MCP25625 SCKOUT（引脚6），但是它总是保持在0V。这是正常的吗？我检查了MISO PIN上的短裤，没有，你尝试拉，没有更多（MISO总是1，但不改变）我也尝试连接斯比到地面，重置到3.3V，没有更多…我也测试了所有这3个板。我问是否有人已经有类似的问题，或者如果你可以建议我这样做。我想测试一下…谢谢你！最好的问候，奥利维尔
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以下为原文
Hello Everybody!
after working the MCP2515, i'm trying the MCP25625 (with tranciever integrated), but i'm facing a big problem, i'm not able to communicate with it, MISO stay at 0V...
here is my configura
tion:
-3.3V on pin 3 an 11 (VDD and VIO), 5V on pin19 (VDDA)
-!reset (pin2) and stby (pin15) not conneted ( after failing, i tested many configurations)
-MISO MOSI, CS and CSK connected to pic24FJ
-osc1 connected to clkout of pic24, osc2 with pull down (3K3)
-TXD connected to TXCAN
-RXD connected to RXCAN
-CANL and CANH open for now
so i checked signals from pic24, all is ok (clock, cs and MOSI) tested from 500Khz to 8Mhz clock speed
osc1 is correctly driven by 16Mhz signal, nothing on osc2
I checked mcp25625 SCKOUT (pin 6), but it stay always at 0V. is that normal?
I checked shorts on MISO pin, there's not, u try a pull up, nothing more (MISO stay always 1, but not changing)
I also tried to connect STBY to ground and reset to 3.3v, nothing more...
I also tested all of that on 3 boards.
I'm asking if someone already had similar issues, or if you can propose me something to test...
Thanks you!
best regards,
Olivier
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