topic Re: Ethernet on the LPC4370FET256/FET100 in LPC Microcontrollers

Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:05 GMT

Content originally posted in LPCWare by JohnR on Sun Dec 08 09:03:00 MST 2013
Hi,

There seem to be discrepancies for the documents describing the LPC4370FET256 and LPC4370FET100

In UM10503.pdf the following

     Table 2 Ethernet yes for the LPC4370FET256 and LPC4370FET100

     Figure 2 shows ETHERNET 10/100 MAC IEEE 1588

    Chapter 27: LPC43xx Ethernet. The Ethernet controller is available on parts LPC435x and LPC433x.

In LPC4370.pdf

     Figure1 shows ETHERNET 10/100 MAC IEEE 1588

     Table 2 Ethernet yes for the LPC4370FET256 and LPC4370FET100

     Paragraph 11.16 Dynamic characteristics: Ethernet

I assume therefore that the Ethernet block is not available on LPC4370FET256 and LPC4370FET100 devices?

Could NXP please verify if this is the case and, if so, correct these documents.

Thanks in advance.

JohnR.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:06 GMT

Content originally posted in LPCWare by xianghuiwang on Sun Dec 08 15:57:47 MST 2013
Ji, John,

Ethernet exsits on these parts. We will review UM consistency.

Thanks.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:06 GMT

Content originally posted in LPCWare by JohnR on Mon Dec 09 05:35:56 MST 2013
Hi,

Good.

Could you please post the Ethernet pin-outs for the FET100 device.

In the FET256 parts these assignments are used for part of the Ethernet interface

RXD_3P9_2
RXD_2P9_3

RX_DVPC_8
RX_CLKPC_0

TX_D2PC_2
TX_D3PC_3

But I don't think these pins exist in the FET100.

Thanks for your help.

John.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:07 GMT

Content originally posted in LPCWare by JohnR on Thu Jan 02 10:15:07 MST 2014
Hi,

As earlier requested, could you please let me know the status of the Ethernet interface on the 100-pin LPC4370 as we would like to base a new project on this device that requires Ethernet functionality.

Thanks in advance for a early response.

John Robbins

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:07 GMT

Content originally posted in LPCWare by mc on Sat Jan 04 08:52:22 MST 2014
Hi JohnR,
Yes 100 pin LPC4370 contains ethernet interface. Pinouts are same as LPC4350/LPC4330. Please look into to chapter 15 of user manual
UM10503 LPC43xx ARM Cortex-M4_M0 multi-core microcontroller Rev. 1.7 — 17 October 2013. Thank you for pointing out missing text.
You can also find it in table3 of datasheet which is at
http://www.nxp.com/documents/data_sheet/LPC4350_30_20_10.pdf

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:08 GMT

Content originally posted in LPCWare by JohnR on Sun Jan 05 10:08:53 MST 2014
Hi mc,

I still think the full Ethernet interface does not exist on the 100 pin LPC4370?

For instance, the port P9 which would contain ENET_RXD3 at P9_2 is apparently not implemented on the 100 pin version?

Please confirm whether the full Ethernet interface is implemented on this device - a current project depends on its availability.

Thanks for your response.

JohnR

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:09 GMT

Content originally posted in LPCWare by mc on Mon Jan 06 13:38:54 MST 2014
Hi John,
100 pin and 144 pin LPC43xx devices only have RMII. Other packages have both MII/RMII.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:09 GMT

Content originally posted in LPCWare by JohnR on Mon Jan 06 16:10:16 MST 2014
Hi mc,

Thanks for the message.

I had just realised the same thing a few hours ago after looking up the differences between MII and RMII.

Looking through the manuals there does not seem to be any statement that the 100 pin chips only enable RMII.

Maybe this could be added to future versions of the manual.

John.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:10 GMT

Content originally posted in LPCWare by mc on Mon Jan 06 16:42:49 MST 2014
Hi John,
I have already taken this request. Thanks for pointing out.

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:10 GMT

Content originally posted in LPCWare by nmz787 on Thu Jan 09 02:33:03 MST 2014
Is there a reference implementation for setting RMII up code-wise?

I found a prototype board with RMII support along with an ethernet jack. I'd like to try using it:
http://www.mikroe.com/products/view/582/ethernet-phy-board/

Looking at the datasheet for that chip, it doesn't look like there's a buffer on it, does that mean the IP stack has to handle the error-correction?

Re: Ethernet on the LPC4370FET256/FET100

lpcware — Wed, 15 Jun 2016 18:41:11 GMT

Content originally posted in LPCWare by arw on Thu Jan 09 09:56:53 MST 2014
Hello,

The Keil MCB4300 (LPC4357 device) implements RMII interface to the ethernet PHY. Sample code for this board, in LPCOpen or from Keil, will show RMII setup.