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lambdaconcept / ft60x_driver

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FT600 support #1

Open kbeckmann opened 5 years ago

kbeckmann commented 5 years ago

Just wanted to say thanks a lot for writing this module first!

It is a bit hard-coded for the ft601 however it seems to work with ft600 by changing a bit here and there. Would you like an outsider like me try to make it work with both or do you prefer to fix it yourself? I sadly don't have any ft601 hardware to test with, only ft600 currently.

key2 commented 5 years ago

I'll have to re-write it because it has a design issue. Will do asap. but I don't have ft600 so I can't tell what the differences are. What are you using the ft600 with ?

kbeckmann commented 5 years ago

I'm currently bringing up my FPGA board Kilsyth which is basically just an FT600 + ECP5 + SDRAM and a bunch of IO pins. I'm currently bringing up the board, just soldered the first unit. (Twitter thread if you are curious https://twitter.com/kbeckmann/status/1071915370536165377 )

kbeckmann commented 5 years ago

The biggest difference between ft600 and 601 is that ft600 has a 16 bit wide data interface and that BE is 2 bit wide instead of 4. The datasheet specifies that ft600 can be used with 4 channel mode but I wonder if that's just a typo/copy paste error.

When the FT600 or FT601 is configured as 4 channels in the multi-Channel FIFO bus mode, the FIFO buffer is configured as 1 KB * 2 (double buffered) each on RX and TX channel.

I haven't worked with the FT60x before so this is all new to me, so I don't have a lot of useful feedback to give to you.

key2 commented 5 years ago

So that confirms that both chip are the same, ft600 is probably the same die, just less wires bonded... Are you using it in 2 channel 8 bits mode, or 1 channel 16 bits ?

On Wed, Dec 19, 2018 at 1:25 PM Konrad Beckmann notifications@github.com wrote:

The biggest difference between ft600 and 601 is that ft600 has a 16 bit wide data interface and that BE is 2 bit wide instead of 4. The datasheet specifies that ft600 can be used with 4 channel mode but I wonder if that's just a typo/copy paste error.

When the FT600 or FT601 is configured as 4 channels in the multi-Channel FIFO bus mode, the FIFO buffer is configured as 1 KB * 2 (double buffered) each on RX and TX channel.

I haven't worked with the FT60x before so this is all new to me, so I don't have a lot of useful feedback to give to you.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/lambdaconcept/ft60x_driver/issues/1#issuecomment-448577170, or mute the thread https://github.com/notifications/unsubscribe-auth/ABNcsod8LgeKOxT7zM-SDuC93mv2NcFZks5u6jAggaJpZM4ZZNcd .

kbeckmann commented 5 years ago

ft600 is probably the same die

Yeah I believe so too, they are very similar according to the datasheet at least.

Are you using it in 2 channel 8 bits mode, or 1 channel 16 bits ?

I'll probably use 1 channel 16 bits to start with.