topic Re: LPC4337 reset error in LPC Microcontrollers

LPC4337 reset error

luiswalther-aco — Thu, 07 Dec 2017 14:59:19 GMT

Hello, i am Using a LPC4337 with ethernet but i have a problem after reset, when i made a POR (power on Reset) the Microcontrolller works as expected, and the ethernet works fine, but when i made a reset from reset pin or a software reset from the core_reset register than the controller cannot initialize the ethernet, i think that maybe is a bug because i am using a 25MHz external crystal ? because on the LPCxpresso board the Reset from pin dont have any issue.

Thanks

Re: LPC4337 reset error

jeremyzhou — Thu, 14 Dec 2017 02:44:40 GMT

Hi Luis Walther-Acosta,

Thank you for your interest in NXP Semiconductor products and 

for the opportunity to serve you.

1. Firstly, I'd like to recommend you check the crystal oscillator circuit by referring to the 13.2 Crystal oscillator section in the attachment.

2. Next, whether you describe the issue in details, as I'm still not very clear with it.

I'm looking forward to your reply.

Ping
 
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Re: LPC4337 reset error

luiswalther-aco — Fri, 15 Dec 2017 14:37:11 GMT

Hi jeremyzhou

Thanks for the answer, is solved, I verified the problem and I was not initializing my Ethernet PHY correctly, the clock on the LPC4337 are correct, also it was not a problem of the Microcontroller........