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Bug #3775

open

properly debug limesdr usb and limesdr mini clocking requirements and osmo-trx support

Added by roh almost 3 years ago. Updated over 1 year ago.

Status:
Stalled
Priority:
Normal
Assignee:
-
Category:
LimeSDR
Target version:
-
Start date:
01/31/2019
Due date:
% Done:

20%

Spec Reference:

Description

limesdr usb and limesdr mini need a external reference clock to be used for gsm applications properly since the internal oscillator is sadly not of the required performance class.

limesdr usb has an extra internal pll (ADF4002 and Si5351C as well as LMK00105) and can handle different external clocks quite flexible
limesdr mini has no pll chip, but only a clock buffer (LMK00105) and needed some help from the fpga to make clocks possible which are not 40MHz


Files

lms_mini_clock_in_50ohm.png View lms_mini_clock_in_50ohm.png 12.7 KB roh, 01/31/2019 05:29 PM
lms_mini_clock_in.png View lms_mini_clock_in.png 13.4 KB roh, 01/31/2019 05:29 PM
lms_mini_clock_out.png View lms_mini_clock_out.png 12.1 KB roh, 01/31/2019 05:29 PM
lms_mini_clock_out_50ohm.png View lms_mini_clock_out_50ohm.png 11.9 KB roh, 01/31/2019 05:29 PM
gpsdo_50ohm.png View gpsdo_50ohm.png 11.6 KB roh, 01/31/2019 05:52 PM
gpsdo.png View gpsdo.png 13.9 KB roh, 01/31/2019 05:52 PM

Related issues

Blocks OsmoTRX - Bug #3341: osmo-trx-lms RF Envelope FAIL on LimeSDR, but not on LimeSDR-miniStalled06/13/2018

Actions
Blocks OsmoTRX - Bug #3342: osmo-trx-lms: low tx output power levelStalledHoernchen06/13/2018

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Blocked by OsmoTRX - Bug #3861: fix function call ordering to support LimeSuite 19.01Resolvedsysmocom03/25/2019

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