I'll have to remove myself from this - since i have decided to go for Ians FIFO. Thanks anyway.
Acko, Australia X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
Nikola Krivorov, Bulgaria, x2
Running total: 15
Acko, Australia X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
Nikola Krivorov, Bulgaria, x2
Running total: 15
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
Running total: 20
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
Running total: 20
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
Running total: 21
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
Running total: 21
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Running total: 22
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Running total: 22
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
Running total: 23
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
Running total: 23
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
Running total: 25
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
Running total: 25
Thank you all for the support! Looks like we have reached the min 20 quickly and I will finalise the design for review and then off to fab. I will leave the GB open for a while until certain matters have been fully clarified.
Gathering from all you queries I will now respond in stages to each in the order posted:
1. Parts are available form Digikey or Mouser. I am keeping track and cross-checking as I go along. Will give a cost estimate on parts shortly. There are a few 0603 parts and not too small smd ICs to solder, so standard tools will do.
2. I did mention ESS DACs only mainly because of the way the re-clock MCK on the board is derived. At 834KHz the Amanero bit clock (BCK) goes up to max 24.756MHz. To re-clock this successfully requires re-clock frequencies much higher. I have mentioned this in my R&D thread and also GLT has nailed this very nicely:
Synchronous Reclocking? H i F i D U I N O
So I have put is at ~50MHz which is the upper limit of a 9023 DAC. The 9012/16/18 can take even higher at up to 100MHz to do it even better. I am not sure if other DACs can handle this level, so the reason for excluding them. There is not need get synchronous types like 49.576MHz or 98.304MHz as this is an Async re-clocking design.
The Amanero MCK is discarded (as it has to go through the isolators anyway). ESS DACs on their own clocks for Async mode
Other DACs may require sync MCK from transport
The DSD Active signal from Amanero is also discarded as the ESS DACs can auto-detect source formats.
More to come ...
Gathering from all you queries I will now respond in stages to each in the order posted:
1. Parts are available form Digikey or Mouser. I am keeping track and cross-checking as I go along. Will give a cost estimate on parts shortly. There are a few 0603 parts and not too small smd ICs to solder, so standard tools will do.
2. I did mention ESS DACs only mainly because of the way the re-clock MCK on the board is derived. At 834KHz the Amanero bit clock (BCK) goes up to max 24.756MHz. To re-clock this successfully requires re-clock frequencies much higher. I have mentioned this in my R&D thread and also GLT has nailed this very nicely:
Synchronous Reclocking? H i F i D U I N O
So I have put is at ~50MHz which is the upper limit of a 9023 DAC. The 9012/16/18 can take even higher at up to 100MHz to do it even better. I am not sure if other DACs can handle this level, so the reason for excluding them. There is not need get synchronous types like 49.576MHz or 98.304MHz as this is an Async re-clocking design.
The Amanero MCK is discarded (as it has to go through the isolators anyway). ESS DACs on their own clocks for Async mode
Other DACs may require sync MCK from transport
The DSD Active signal from Amanero is also discarded as the ESS DACs can auto-detect source formats.
More to come ...
App Notes - Amanero Isolator Re-Clocker
The intended plan is to connect the ESS DAC Master Clock to the Re-Clock input (MCK) of this board. In this way the re-clocked signals are lined up with the DAC master clock. I would think in some ways this has some synchronous effect- shall we say "pseudo-synchronous" re-clocking.
On the other hand you can also drive this board with a totally independent clock that meets the timing requirements indicated earlier. DAC has its own separate clock - completely Ansync mode. So there are options here and maybe other DACs can be also used this way....
The intended plan is to connect the ESS DAC Master Clock to the Re-Clock input (MCK) of this board. In this way the re-clocked signals are lined up with the DAC master clock. I would think in some ways this has some synchronous effect- shall we say "pseudo-synchronous" re-clocking.
On the other hand you can also drive this board with a totally independent clock that meets the timing requirements indicated earlier. DAC has its own separate clock - completely Ansync mode. So there are options here and maybe other DACs can be also used this way....
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
Running total: 27
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
Running total: 27
Cool, thats what I figured, but from an earlier post of yours someone may think it was just for ESS. I wanted to clear that up for myself as well as those here who may have hesitated to join. It may well have been me misreading your post in the ackodac main thread as applying to this board when you were referring to the teflon/turboclock version.
I would just call it plain synchronous reclocking. its asynchronous wrt the input clock in so far as it is cleaned up and the entire stream offset in time by a flop, or is it a flip?, but the relationship of MCLK, FS, BCK, Sdata remain unchanged (other than it may be closer to the ideal)
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
qusp x1
Running total: 28
I may just get the teflon version but i'll throw my name in the hat for now
Last edited:
Me too.
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
qusp x1
danny_66 x1
Running total: 29
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
qusp x1
danny_66 x1
Running total: 29
Acko, Australia X1
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
qusp x1
danny_66 x1
meintan x1
Running total: 30
RollE2k, Sweden X1
number9, USA X2
Klipschkid, HK, x1
randytsuch, USA X2
grufti, USA X2
kp93300, malaysia x1
Gricko,Croatia x1
NicMac, Italy x2
xtomm, Czech Republic x1
DeanoUK, UK, x2
Lil' Knight, VN x1
smanz, Spain x1
MisterRogers, USA x2
palmito USA x1
tagheuer Canada x1
shoom UK x1
Diyfan, USA x1
TheShaman, Greece x1
LuisMCP, Spain x2
qusp x1
danny_66 x1
meintan x1
Running total: 30
MCK Reclock?
Hmmm... why discard this when we can also reclock the MCK from transport. In this way we can achieve fully synchronous operation (with DAC driven from this MCK). Then other DACs can be used also
Hmmm... why discard this when we can also reclock the MCK from transport. In this way we can achieve fully synchronous operation (with DAC driven from this MCK). Then other DACs can be used also- Status
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