Retinal Prosthesis Dissertation - Student Home Pages

FPGA Receiver (structural) chip
);--Instance (Instantiation) of pulse_count_to_AER_stream
Inst_preform_for_electrodes: preform_for_electrodes
--Eight bits will represent 192(24*8) addresses OK
--The spike_clock MUST be used here.
--fed from "pulse_count_to_AER_stream"
port map (preform_clock => spike_clock,
incoming_stream => AER_RGB_stream,
red_with_address => red_1_4_addressed,
green_with_address => green_2_5_addressed,
blue_with_address => blue_3_6_addressed
--out_with_rgb_address =>
composite_addressed_stream -- {174_bits}
);--Goes to "produce_colour_data_streams"
Inst_produce_colour_data_streams: produce_colour_data_streams
port map (spike_data_clock => spike_clock,
red => red_1_4_addressed,--Red with address bits
green => green_2_5_addressed,--Green with address bits
blue => blue_3_6_addressed,--Blue with address bits
red_data_out => red_data, --49 downto 0 {out on RHS}
green_data_out => green_data, --49 downto 0 i.e. colour
information only
blue_data_out => blue_data --49 downto 0 i.e. colour
information only
);--Colour information feeds to "extend_data_streams" AND
"fully_extend_data_streams"
--From "extend_dat_streams" then to nowhere!
--From "fully_extend_data_streams" to
"change_data_streams_to_pulsed_format"
Inst_fully_extend_data_streams: fully_extend_data_streams
--feeds "change_data_streams_to_pulsed_format"
port map (this_spike_clock => spike_clock,--NOT pixel_clock
red_data_incoming => red_data,
green_data_incoming => green_data,
blue_data_incoming => blue_data,
extended_red => outer_red_pulse_stream, --1000
bits.
extended_green => outer_green_pulse_stream, --1000
bits.
extended_blue => outer_blue_pulse_stream --1000
bits.
);--sends to `fully_extended.dat' via
"file_support_fully_extended_data_streams"
--Inst_extend_data_streams: extend_data_streams
--port map (this_spike_clock => partial_spike_clock,--NOT pixel_clock
-- red_data_incoming => red_data,
-- green_data_incoming => green_data,
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