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hardware/icE1usb: Update ECNs for future rev 1.1 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I699254663564ecbad75394307edc44be0340e4d5
This commit is contained in:
Sylvain Munaut 2022-09-05 23:46:29 +02:00
parent 945028166a
commit bdc41ffe73
1 changed files with 24 additions and 0 deletions
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hardware/icE1usb/ecn.md
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@ -130,6 +130,10 @@ Production version, sent to manufacturer for production.
* Those 2 would be very slight changes, like ~ 0.1mm on each side, still have to account * Those 2 would be very slight changes, like ~ 0.1mm on each side, still have to account
for possible tolerance in the cases that could be smaller than nominal ! for possible tolerance in the cases that could be smaller than nominal !
* The I2C connection to the GPS conflicts with usage for the extension port. Turns out the
chinese GPS module act as a master on those lines.
See https://projects.osmocom.org/issues/5664 for details of the issue.
### Notes ### Notes
* Adding series resistor for `gps_reset_n` and `gps_pps` was considered, but deemed not necessary. * Adding series resistor for `gps_reset_n` and `gps_pps` was considered, but deemed not necessary.
@ -155,3 +159,23 @@ FPGA \ / R Magnetics
This would take strain off the FPGA driver, provide more current and the delay of the gate This would take strain off the FPGA driver, provide more current and the delay of the gate
might actually help make the pulse shape more correct. might actually help make the pulse shape more correct.
Revision 1.1
------------
### Description
Updated production version with minor fixes and a few adaptations for further production runs
by sysmocom.
### Changes compared to previous revisions
* Updated to kicad 6 format
* Added NO jumpers on the I2C lines to GPS module
* Added fiducials
* Silkscreen updated
### Manufactured
* TBD