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by Chokshinilav09
Sun Dec 09, 2018 2:04 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Multiple RS485 Communication with Pi Compute module
Replies: 0
Views: 268

Multiple RS485 Communication with Pi Compute module

Hi, I am designing Modbus Application Circuit where I want to interface Multiple Modbus devices with Raspberry Pi CM3L module. I am using MAX3078EESA+ UART to RS-485 converter IC with Multiplexer to select particular Modbus device from multiple. I am also sharing you interfacing circuit for s please...
by Chokshinilav09
Mon Oct 08, 2018 6:42 pm
Forum: Compute Module
Topic: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board
Replies: 14
Views: 2808

Re: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board

Hi John Westlake, We are working on the debug of USB Enumeration issue and meanwhile, we are also planning for the next revision of the carrier board. So, it would be great if you can help us to share the raspberry pi reference design for LAN9514 so that we can implement again in this revision and c...
by Chokshinilav09
Sun Oct 07, 2018 5:39 pm
Forum: Compute Module
Topic: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board
Replies: 14
Views: 2808

Re: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board

Hi John Westlake,

Kindly find Carrier board layout "USB_LINE_TRACKING.PDF" to review USB lines.
https://drive.google.com/open?id=1G8Xnw ... PeIEsTka78

Thank you for your suggestions. I will check and let you know if works.
by Chokshinilav09
Sat Oct 06, 2018 9:32 am
Forum: Compute Module
Topic: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board
Replies: 14
Views: 2808

Re: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board

Hi John Westlake, Thank you for your response. I am sharing you layout file on below link to review USB section so that we can validate the USB HUB part, https://drive.google.com/open?id=1KlAlraEwJ3BsGpZVUbAA5vSC4uo30yBl As per your suggestion, We have changed the value of Load capacitors(C78 and C7...
by Chokshinilav09
Mon Oct 01, 2018 4:46 pm
Forum: Compute Module
Topic: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board
Replies: 14
Views: 2808

Re: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board

@aBUGSworstnightmare: Thank you for the answer and observation. Yes, you are correct so I tried by removed 0R resister which is in series of that USB4_P and USB4_N but facing the same issue. @John Westlake: Thank you so much for all the points which you mentioned. In this design, I have connected up...
by Chokshinilav09
Sun Sep 30, 2018 12:20 pm
Forum: Compute Module
Topic: USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board
Replies: 14
Views: 2808

USB [LAN9514I] Enumeration Issue in Compute Module 3L Custom Carrier Board

Hello, Description - We have designed Custom Carrier Board with CM3L. here we have used same LAN9514 USB HUB IC and followed the same reference design od Raspberry pi 3 model B.(https://www.raspberrypi.org/app/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf) All the layout rules are followed as per...

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