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Old 19th August 2013, 02:48 PM   #841
deanoUK is offline deanoUK  United Kingdom
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Hi Jackal29a.

Can we have a heads up when the new firmware is available for download please ?
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Old 19th August 2013, 05:47 PM   #842
miksi is offline miksi  Serbia
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Quote:
Originally Posted by deanoUK View Post
Hi Jackal29a.

Can we have a heads up when the new firmware is available for download please ?
Everything is soldered except XOs. Anyone have some idea how to desolder Crystek CCHD part using classic soldering iron?

Послато са HTC EVO 3D X515m користећи Тапаталк 4
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Old 19th August 2013, 06:01 PM   #843
deanoUK is offline deanoUK  United Kingdom
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Why do you need to desolder them ?
They are not easy to desolder and may not survive the process.

When I soldered my XOs I placed a small piece of wire under each pad so you can slide the wire out to desolder.
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Old 20th August 2013, 08:10 PM   #844
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Quote:
Originally Posted by deanoUK View Post

When I soldered my XOs I placed a small piece of wire under each pad so you can slide the wire out to desolder.
Thanks Deano.
That's a neat trick. Well worth knowing. Pity I read your post just after mounting my 2 Si590 XOs! Just hope I don't have to remove them.

Best Ian
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Old 20th August 2013, 09:04 PM   #845
miksi is offline miksi  Serbia
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Quote:
Originally Posted by deanoUK View Post
Why do you need to desolder them ?
They are not easy to desolder and may not survive the process.

When I soldered my XOs I placed a small piece of wire under each pad so you can slide the wire out to desolder.
Crystek is on Buffalo DAC and this afternoon I removed it successfully with ordinary soldering iron and piece of copper foil 0.2mm thick.
I tried to update firmware today but pin 11 continues to "misbehave" so nothing new. I guess I will solder 98 xo on x1 position then.
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Old 21st August 2013, 08:48 AM   #846
avian is offline avian  Australia
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Speaking of XO's, Im in the process of ordering parts (yet to receive the board) and have a quick question. The schematic shows the XOs Output Enable pin, as pin 1. Yet the Si590 is one of the recommended XOs - which uses pin 2 as OE. It seems teh Si591 uses pin 1.

So whats the correct part? 590 or 591? and before i seriously stuff up, would I be correct presume its the CMOS 3.3v version I need.
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Old 21st August 2013, 09:09 AM   #847
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The Si590 CMOS, Digikey part number & description:
590CD-ADG-ND, OSC PROG 3.3V CMOS HIGH 7PPM.
You will also have to specify the frequencies they are to be programmed to, ie 90.3168 & 98.304 MHz.
Although they have 6 pins only pins 1,3 4 & 6 are used 2 & 5 are not connected, the pads on the SO3 board match these "outer" pads.
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Old 21st August 2013, 11:41 AM   #848
smanz is offline smanz  Spain
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Hi Acko.

Reclocker AKL-AMN-SXX bom have a very important mistake. For U1, U9, Bom says IL715-3E, but the correct reference is IL175-E, without digit 3. I ordered to Farnell IL715-3E, and the case is too small.

https://docs.google.com/spreadsheet/...kE&usp=sharing

Regards
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Old 21st August 2013, 11:50 AM   #849
acko is offline acko  Australia
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Quote:
Originally Posted by acko View Post
There are a few things to consider:
1. Cost saving plus one less switching component on board.
2 The full XO frequency goes into the isolator chip (IL712) if Postemi divider bypassed. e.g. 98Mhz going into IL712 instead of the divided 49.xx or 24.xxMhz
3. Potsemi FF on the board also buffers the XO output. If bypassed then the IL712 loads the XO with its input capacitance-this value is not specified for Il712. Could have some effects.

Anyway, we need to experiment further to confirm.
IL721 specs show min input pulse width of ~10ns. So not advisable to pass 90.3168/98.304MHz clock (5ns pulse) through it.

Same goes for 45.xxx/49.xxx Mhz clock (~10ns)

Best to let the external Potesemi FF divide to 22.xxx/24.xxxMHz (~20ns pulse) before clocking Amanero.
e.g. for 90.xxx/98.xxxx XO use div/4 FF and set Amanero to accept 22.xxx/24.xxxMHz ext. clock
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Last edited by acko; 21st August 2013 at 11:54 AM.
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Old 21st August 2013, 02:13 PM   #850
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Quote:
Originally Posted by smanz View Post
Hi Acko.

Reclocker AKL-AMN-SXX bom have a very important mistake. For U1, U9, Bom says IL715-3E, but the correct reference is IL175-E, without digit 3. I ordered to Farnell IL715-3E, and the case is too small.
Same here, the Digikey part ref is correct and the description mentions SOIC16WIDE. It's just that sneaky 3 that makes all the difference. The Farnell item description does not make it clear which version is the wide one, you need to go to the manufacturers data sheet for that.
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