I got this error when signing spin on Cyclone GX IV: Error: Pin C1 does not support I/O standard 1.5 V for TDm Error: Pin C2 does not support I/O standard 1.5 V for TDp Can anyone help me solve this issue? :confused:

I am not sure, but aren't these transceiver pins? If yes, then You can't choose LVTTL, 3.3V, 2.5V, etc voltages for those pins...

I thought the voltage for transceiver pins would be 1.5-V PCML. But when I changed the I/O Standard to 1.5-V PCML, it created a differential pin, and I don't know what it is for. :confused:

Well that's correct, the transceiver uses differential signaling.

This is the error I got: Error: Differential I/O output pin TDp is assigned to a non differential location C2. However, it must be assigned to a differential output location Error: Differential I/O output pin TDp(n) is assigned to a non differential location C1. However, it must be assigned to a differential output location How to solve this issue? :)

When You select pin as differential, Pin Planner automatically creates positive and negative pins, so assign a signal to proper pins.

Problem with signing spins on Cylone GX IV

17 Replies

Altera_Forum
Honored Contributor
14 years ago
Add a screenshot of pin planner
Altera_Forum
Honored Contributor
14 years ago
http://img545.imageshack.us/img545/7495/pinplanner.png
Altera_Forum
Honored Contributor
14 years ago
Why did You assign TDp to negative pair node?
Altera_Forum
Honored Contributor
14 years ago
--- Quote Start ---
Why did You assign TDp to negative pair node?
--- Quote End ---

Can you tell me how to assign TDp to positive pair node? I'm just a newbie. :D
Altera_Forum
Honored Contributor
14 years ago
Delete both assignments and assign positive to positive, so negative will be assigned automatically.
Altera_Forum
Honored Contributor
14 years ago
I can't imagine how to do. I added all screenshots of the steps I did in Pin Planner. Please tell me which step I did wrong.

Step 1
http://img851.imageshack.us/img851/2745/pinplanner1.png

Step 2
http://img830.imageshack.us/img830/3834/pinplanner2.png

Step 3
http://img545.imageshack.us/img545/7495/pinplanner.png
Altera_Forum
Honored Contributor
14 years ago
Can anyone help me solve this issue? I can attach the source file if you want. :(

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Problem with signing spins on Cylone GX IV

17 Replies

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