FreeCalypso > hg > freecalypso-schem2
annotate venus/src/usb/regulator_ic.v @ 36:c1256c8757c3
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> |
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date | Mon, 22 Nov 2021 19:19:59 +0000 |
parents | 9f70dc110ad7 |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 module regulator_ic (IN, OUT, GND, EN); |
9f70dc110ad7
venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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3 input IN, GND, EN; |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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4 output OUT; |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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5 |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 pkg_IC_5pin pkg (.pin_1(IN), |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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7 .pin_2(GND), |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 .pin_3(EN), |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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9 .pin_4(), /* no connect */ |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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10 .pin_5(OUT) |
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venus/src/usb: building blocks from DUART28
Mychaela Falconia <falcon@freecalypso.org>
parents:
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11 ); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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13 endmodule |