FreeCalypso > hg > fc-pcm-if

annotate README @ 5:3ae4a6ca5639

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add README
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 12 Oct 2024 03:11:17 +0000
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3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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1 The project contained in this repository is a mechanism for capturing the
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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2 decoded 16-bit linear PCM form of voice call downlink on FreeCalypso boards
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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3 via MCSI, and for feeding 16-bit linear PCM into call uplink via the same
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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4 interface. The mechanism consists of a Lattice Icestick FPGA board, a gateware
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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5 image for this FPGA, and host programs that interface to it via the UART channel
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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6 of the on-board FT2232H.
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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7
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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8 So far only downlink Rx has been implemented; to get the uplink path, more work
3ae4a6ca5639 add README
Mychaela Falconia <falcon@freecalypso.org>
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9 is needed on both FPGA gateware and software components.