Search found 14 matches

by Ananya.Muddukrishna
Fri Oct 13, 2017 1:48 pm
Forum: FAQ about Tulipp Development Platform
Topic: Over voltage protection of TTL GPIO ports
Replies: 5
Views: 5590

Re: Over voltage protection of TTL GPIO ports

Hi Timo,

I ran the test you recommended above. No power, check for shorts.

TTL1 pin has a short with the 1.8V track :(

- Ananya
by Ananya.Muddukrishna
Mon Oct 02, 2017 9:31 am
Forum: FAQ about Tulipp Development Platform
Topic: Over voltage protection of TTL GPIO ports
Replies: 5
Views: 5590

Re: Over voltage protection of TTL GPIO ports

Hi Timoteo,

I unplugged the SD card and turned the EMC2DP on. This I assume does not program the FPGA and run software on the Zynq.

I see the same behavior. TTL1 and TTL3 are at 1.8V. TTLVCC is at 1.8V. Other TTL pins pins i.e., TTL0, TTL2, TTLN, TTLP, and TTLGND are at 0V.



- Ananya
by Ananya.Muddukrishna
Wed Sep 27, 2017 9:14 am
Forum: FAQ about Tulipp Development Platform
Topic: Over voltage protection of TTL GPIO ports
Replies: 5
Views: 5590

Re: Over voltage protection of TTL GPIO ports

There is a typo in the above description.

The pins TTL1 and 3 are always driven high upon power on. I suspect U15 is faulty. Whats U15? Send me an email if you cannot disclose what U15 is here. I assume its some sort of clamper.
TTL0 and 2 seem to be fine.
by Ananya.Muddukrishna
Wed Sep 27, 2017 8:43 am
Forum: FAQ about Tulipp Development Platform
Topic: Over voltage protection of TTL GPIO ports
Replies: 5
Views: 5590

Over voltage protection of TTL GPIO ports

Hi, What would happen if a 3.3V signal is applied to a TTL GPIO port (EMC2DP) configured to operate at 1.8V? Something is driving the TTL1-3 GPIO pins high (1.8V) immediately when I turn the board on. The pins stay high as long as the board is powered on. I want to rule out accidental exposure to a ...
by Ananya.Muddukrishna
Tue Jul 11, 2017 10:44 am
Forum: FAQ about Tulipp Development Platform
Topic: Pitch of EMC2 LVTTL IO port connector
Replies: 3
Views: 4208

Re: Pitch of EMC2 LVTTL IO port connector

Excellent information. Thanks!

I will get those 2-2.54 converter wires.

Note to myself: Never spend half-an-hour of precious life trying to force squeeze 2.54 mm crimps to 2 mm. :D
by Ananya.Muddukrishna
Fri Jul 07, 2017 11:13 am
Forum: FAQ about Tulipp Development Platform
Topic: Pitch of EMC2 LVTTL IO port connector
Replies: 3
Views: 4208

Pitch of EMC2 LVTTL IO port connector

Hi,

What is the pitch of the connector for the LVTTL IO port?

General purpose jumper wires designed for 2.54 mm pitch dont hold onto the LVTTL port strongly.

Best regards,
Ananya
by Ananya.Muddukrishna
Mon Jun 05, 2017 1:54 pm
Forum: FAQ about Tulipp Development Platform
Topic: Need single, low-speed, digital output pin on EMC2
Replies: 2
Views: 3692

Re: Need single, low-speed, digital output pin on EMC2

I got confirmation from Asbjorn that the TTL port pins match the GPIO cables I use. Also, he found that 1.8V is the only configuration that works. This means that I need to use a level shifter while talking to the microcontroller.
by Ananya.Muddukrishna
Mon Jun 05, 2017 12:52 pm
Forum: FAQ about Tulipp Development Platform
Topic: Need single, low-speed, digital output pin on EMC2
Replies: 2
Views: 3692

Need single, low-speed, digital output pin on EMC2

Hi, I need a single, low-speed, digital output pin on EMC2 to communicate with an external microcontroller. The interface to this pin should preferably be simple. Such pins are available on the Rasberry Pi or the Beaglebone Black for general purpose I/O. Is such a pin available on the EMC2? I was un...
by Ananya.Muddukrishna
Mon Feb 27, 2017 12:35 pm
Forum: FAQ about Tulipp Development Platform
Topic: SDK 2016.2 and Vivado 2016.2 and SDSoC 2016.2 BSP (standalone/Linux) for the EMC2-DP
Replies: 2
Views: 3951

Re: SDK 2016.2 and Vivado 2016.2 and SDSoC 2016.2 BSP (standalone/Linux) for the EMC2-DP

Here is a basic SDSoC 2016.2 platform with Linux and bare-metal support for the Sundance EMC2DP: https://studntnu-my.sharepoint.com/personal/ananyam_ntnu_no/_layouts/15/guestaccess.aspx?docid=0e2de9d8a43d44f9da9c9c4286bfdbe48&authkey=AYx9VMusQFF8suQD6V5rIKU A HOWTO file inside describes how to r...
by Ananya.Muddukrishna
Mon Dec 12, 2016 9:18 am
Forum: FAQ about Tulipp Development Platform
Topic: Power measurement on the EMC2 DP board
Replies: 0
Views: 25591

Power measurement on the EMC2 DP board

Hi Timoteo, Hope you are doing fine. Please share your experience in measuring power consumption of the EMC2 DP board. I would like to understand if there are methods to measure power consumption at a higher granularity than the wall-socket. For example, PS, PL, DRAM power. I was looking at power me...

Go to advanced search