Where XMOS?
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- New User
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Big companies are out of stock? Or you should find more suppliers.
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- Experienced Member
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- Joined: Sat Aug 31, 2013 11:23 pm
This does not explain the stock situation with XU208 since it has no flash.
Actually I checked stock on XU/XUF parts - there is no stock on ANY of them.
We have a board prototype ordered with two XU208-256-TQ64 (or -128), and can't find them :(
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- XCore Legend
- Posts: 1913
- Joined: Thu Jun 10, 2010 11:43 am
Hi. Took a bit of digging and found the following inventory:
https://uk.farnell.com/xmos/xuf208-128- ... B-OCTOPART
They appear to have 84 pcs in stock as of this writing. This component has the INTERNAL FLASH (ISSI) which should work fine for your case. Grab a few while you can. Inventory I believe is in the UK but you can have them transfer it to any local branch.
The listing states this exact part #
XUF208-128-TQ64-C10
is no longer in production as it is being replaced with:
XUF208-128-TQ64-C10A
which Digikey is stating will be in stock near end of February.
(high memory version)
Digikey # 880-XUF208-256-TQ64-C10A-ND
Hope this helps.
https://uk.farnell.com/xmos/xuf208-128- ... B-OCTOPART
They appear to have 84 pcs in stock as of this writing. This component has the INTERNAL FLASH (ISSI) which should work fine for your case. Grab a few while you can. Inventory I believe is in the UK but you can have them transfer it to any local branch.
The listing states this exact part #
XUF208-128-TQ64-C10
is no longer in production as it is being replaced with:
XUF208-128-TQ64-C10A
which Digikey is stating will be in stock near end of February.
(high memory version)
Digikey # 880-XUF208-256-TQ64-C10A-ND
Hope this helps.
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- Experienced Member
- Posts: 99
- Joined: Sat Aug 31, 2013 11:23 pm
Thank you mon2,
Our prototype boards are designed with XU208, with direct update of the external memory by a microcontroller.
So it seems that we will hope for a stock at Digikey, in a meantime working on other board's components
and solder XMOS chips when they are available.
Thank you again .
Our prototype boards are designed with XU208, with direct update of the external memory by a microcontroller.
So it seems that we will hope for a stock at Digikey, in a meantime working on other board's components
and solder XMOS chips when they are available.
Thank you again .
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- XCore Legend
- Posts: 1913
- Joined: Thu Jun 10, 2010 11:43 am
Hi. If I recall correctly, you can treat the internal flash memory as though it is external. So if you assert the #reset on the cpu, all of the flash interface lines will tristate (hi-z). Then you can perform your normal flash access with the internal flash device with your cpu.
Just note that internal flash is from issi so the ids will vary accordingly.
Please review the cpu datasheet but fairly sure you can do this.
Just note that internal flash is from issi so the ids will vary accordingly.
Please review the cpu datasheet but fairly sure you can do this.
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- XCore Legend
- Posts: 1913
- Joined: Thu Jun 10, 2010 11:43 am
Yup. See section 8 of the xuf208 data sheet. You will see the internal view of the CPU. The same connections are most likely used by your design for the external flash.
So proceed to assert #reset ( make it Low ) and then apply your external microcontroller lines to access the internal QSPI flash device.
So proceed to assert #reset ( make it Low ) and then apply your external microcontroller lines to access the internal QSPI flash device.
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- Experienced Member
- Posts: 99
- Joined: Sat Aug 31, 2013 11:23 pm
Thank you.
You are right.
We considered this approach. I've decided to go with external memory because:
1. Microcontroller will operate in SPI mode, and XMOS chip in quad SPI. It was easier to operate external memory, also because we have two chips on a board.
2. It's easier for our contract manufacturing to preprogram external flash than XMOS chips.
You are right.
We considered this approach. I've decided to go with external memory because:
1. Microcontroller will operate in SPI mode, and XMOS chip in quad SPI. It was easier to operate external memory, also because we have two chips on a board.
2. It's easier for our contract manufacturing to preprogram external flash than XMOS chips.
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- XCore Addict
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- Joined: Sun Feb 23, 2014 11:30 am
The end of Mart, Digikey have only one chip in 64-pin package, and it is not XU/XUF208.
NO ONE chip in 48-pin package. So our products with XS1 and 208 will finished soon.
We decide to start of redesigning out products with other platform, to go away from XMOS.
NO ONE chip in 48-pin package. So our products with XS1 and 208 will finished soon.
We decide to start of redesigning out products with other platform, to go away from XMOS.
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- XCore Legend
- Posts: 1913
- Joined: Thu Jun 10, 2010 11:43 am
Hi. The semiconductor industry is currently a mess for assorted reasons. The inventory levels of ST micros is very similar. AKM devices that were $3-$5 USD each are selling @ $60++ USD on the street.
Suggest highly to contact the USA Sales head (regardless of where you may be located):
https://www.linkedin.com/in/nial-van-wa ... full-click
Reach out to him, even if needed to be through Linked In. Have limited contact details these days but he should be there to offer you the official status of the "A" die version of these devices. That was the original reason for the delayed production.
Suggest highly to contact the USA Sales head (regardless of where you may be located):
https://www.linkedin.com/in/nial-van-wa ... full-click
Reach out to him, even if needed to be through Linked In. Have limited contact details these days but he should be there to offer you the official status of the "A" die version of these devices. That was the original reason for the delayed production.
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- XCore Addict
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- Joined: Sun Feb 23, 2014 11:30 am
It was a fire at AKM's factory in October.