9 Commits

Author SHA1 Message Date
Michael Ossmann
92c21ea953 HackRF One: clean up
- silkscreen
- fabrication attributes
- dates
- copyright
- README
2023-01-06 06:09:09 -05:00
Michael Ossmann
9b1ddf8a8f HackRF One: update clock termination passives 2023-01-06 06:09:09 -05:00
Michael Ossmann
04f7487a2f HackRF One: update 100 nF capacitor part selection 2023-01-06 06:09:08 -05:00
Michael Ossmann
d352952f96 HackRF One: adjust clock phase with RC delay
Remove chaining of buffers to delay GCK2 and instead use an RC delay for
both GCK2 and SGPIO_CLK.
2023-01-06 06:09:08 -05:00
Michael Ossmann
f927c5c25b HackRF One: add sample clock distribution options 2023-01-06 06:09:08 -05:00
Michael Ossmann
a4a007ed75 HackRF One: AC couple CLKIN
We've always specified that CLKIN should be DC (based on the Si5351C
documentation), but it has worked with AC input.  AC coupling the buffer
input restores this undocumented feature.
2023-01-06 06:09:08 -05:00
Michael Ossmann
e15bb0e972 HackRF One: chain SGPIO_CLK and GCK2 buffers
This more closely emulates the clock phase relationships on prior
hardware revisions that used the Si5351C.

Update clock trace widths.
2023-01-06 06:09:08 -05:00
Michael Ossmann
40dca9ecf2 HackRF One: component selections, DNP, and Notes 2023-01-06 06:09:08 -05:00
Michael Ossmann
d176b0a118 HackRF One: change U19 from Si5351C to Si5351A
add clock distribution and detection
2023-01-06 06:09:08 -05:00