FreeCalypso > hg > ffs-data-bundle
comparison aud-c139/headset.src @ 4:e1878231dbcd
aud-c139: preliminary version
| author | Mychaela Falconia <falcon@freecalypso.org> |
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| date | Tue, 05 Apr 2022 06:22:50 +0000 |
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| 3:e9c1f6d65654 | 4:e1878231dbcd |
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| 1 # C139 headset audio mode, reconstructed from register readings | |
| 2 # collected in freecalypso-reveng repository, compal/audio directory | |
| 3 | |
| 4 mic headset { | |
| 5 gain 9 # read out via omr in active call state | |
| 6 output-bias 0 # C139 uses 2.0V | |
| 7 } | |
| 8 | |
| 9 # C139 fw applies complex volume control: it messes with PGA settings, | |
| 10 # and in headset mode it also applies a FIR filter that produces a 6 dB | |
| 11 # digital gain without any frequency curve transformation. | |
| 12 # | |
| 13 # For FreeCalypso, given how far we are from actually using the headset jack | |
| 14 # on C139 for its headset function (as opposed to the serial port), | |
| 15 # we are going to start with PGA at 0 and no weird FIR. | |
| 16 | |
| 17 speaker headset { | |
| 18 gain 0 | |
| 19 } | |
| 20 | |
| 21 sidetone -23 # readout of VBUCTRL from official fw | |
| 22 | |
| 23 # C139 AEC config for headset mode | |
| 24 aec-new 2 1 0x14 0x4CCC 0x59AD 0x7500 0 0x1000 0x1000 0 4 0x20 |