622
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 We have one experimental FCDEV3B V2 board on which our regular Calypso chip
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
2 ([P]D751992AGHH) has been replaced with D751774AGHH, an earlier F-number
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 featuring DSP ROM version 3416 rather than the final version 3606 which we
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 normally work with. Both chip versions are Calypso C035 variants (ARM7 running
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 at 52 MHz, DSP running at 104 MHz), and both include AMR support - but there
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 must have been some issue with DSP version 34 (and maybe version 35 used in
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 Calypso+) that compelled TI to produce the newer and final version 36 which we
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 are most familiar with.
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 Our Layer1 code is based on TI's TCS211-20070608 semi-src release (which we have
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 reconstructed back to full source), and it officially supports only DSP 36.
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 However, our FC Magnetite firmware can also be built for DSP 34 targets (see
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 the Calypso-version-override article), in which case we use a monolithic DSP
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 patch (no L1_DYN_DSP_DWNLD) extracted from the TSM30 source. The patch version
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 is 4130.
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 The configure.sh target name for this special modified board is fcdev3b-dsp34
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 instead of just fcdev3b, and the two firmware builds are not interchangeable:
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 the regular fcdev3b build goes into regular FCDEV3B boards, the special
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 fcdev3b-dsp34 build goes into the special FCDEV3B-751774 board. However, when
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 running its respective build this DSP 34 board appears to function just as well
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 as our regular DSP 36 targets: standalone RF tests work, DSP-based audio
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
23 services (beeps and Melody E1) work, connecting to a live GSM network worked,
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
24 a few test voice calls worked, all of them connected in AMR mode, voice passed
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 successfully in both directions.
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
26
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
27 Going forward, we shall continue using D751992AGHH chips with DSP ROM version
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
28 3606 as our regular platform, but it is nice to know that the earlier DSP 34
|
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
29 apparently works too.
|