FreeCalypso > hg > freecalypso-schem2

annotate venus/src/core/rfmatch_pa2fem_pi.v @ 36:c1256c8757c3

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eliminate R209 and tie Iota VLMEM directly to UPR We already eliminated R210 (VLMEM pull-down option) earlier, because our simplified LCD power supply and reset line wiring is incompatible with 1.8V MEMIF. But with VLMEM always needing to be high, a pull-up resistor offers no advantage over a direct tie to UPR, so let's eliminate the superfluous resistor.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 22 Nov 2021 19:19:59 +0000
parents 3ed0f7a9c489
children
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3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
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1 /* RF Tx path from PA to M034F FEM, replicated for high and low bands */
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
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2 /* we are going to use a generic pi network topology on FC Venus */
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
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3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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4 module rfmatch_pa2fem_pi (In, Out, GND);
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
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3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
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6 input In;
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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7 output Out;
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 input GND;
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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10 rlc_generic series (In, Out);
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
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11 rlc_generic GND_leg_in (In, GND);
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 rlc_generic GND_leg_out (Out, GND);
3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
Mychaela Falconia <falcon@freecalypso.org>
parents:
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3ed0f7a9c489 Venus: first version of Verilog for the Calypso core
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14 endmodule