FreeCalypso > hg > fc-rfcal-tools
annotate doc/TI-docs @ 127:fd856f729618
scripts: fc-rfcal-tri850 added
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 24 Dec 2019 07:08:27 +0000 |
parents | 131abadbd74d |
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Mychaela Falconia <falcon@freecalypso.org>
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1 We don't have a TI calibration document that exactly matches the |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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2 Calypso+Iota+Rita chipset we are working with, but we do have two different |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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3 documents from other points in TI history: |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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4 |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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5 ftp://ftp.freecalypso.org/pub/GSM/Calypso/rf_calibration.pdf |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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6 |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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7 https://www.freecalypso.org/LoCosto-docs/Production%20test%20and%20calibration/i_sample_rf_test_and_calibration_13_03_04_01991%20-%20v026.pdf |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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8 |
131abadbd74d
doc/Rx-cal-theory written
Mychaela Falconia <falcon@freecalypso.org>
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9 The rf_calibration.pdf document we found back in 2011 dates from well before |
131abadbd74d
doc/Rx-cal-theory written
Mychaela Falconia <falcon@freecalypso.org>
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10 our Calypso+Iota+Rita chipset and describes TI's much earlier Sara RF, whereas |
131abadbd74d
doc/Rx-cal-theory written
Mychaela Falconia <falcon@freecalypso.org>
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11 the LoCosto document naturally deals with TI's LoCosto/I-Sample platform. |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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12 |
131abadbd74d
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13 To the best of our understanding of TI history, Sara RF is two generations |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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14 before our Rita RF (as far as we know, the evolutionary line went from Sara to |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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15 Clara to Rita), whereas LoCosto (combining the baseband processor and RF |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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16 in the same chip) was a later development after the Calypso, hence our chipset |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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17 and the corresponding TCS211 firmware fall right in between the two calibration |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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18 docs we have. |
131abadbd74d
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19 |
131abadbd74d
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20 The details of the calibration procedures that are correct for our |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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21 Calypso+Iota+Rita chipset and closely match those that have been performed by |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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22 Openmoko's factory have been reconstructed by Mychaela Falconia after very |
131abadbd74d
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23 careful scrutiny of both Sara and LoCosto calibration documents, combined with |
131abadbd74d
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24 detective analysis of calibration artifact files found in Openmoko-made GTA02 |
131abadbd74d
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25 units; neither the Sara document nor the LoCosto one is particularly instructive |
131abadbd74d
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Mychaela Falconia <falcon@freecalypso.org>
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26 by itself, and a *lot* of intelligent filling of the blanks was required. |