FreeCalypso > hg > fc-small-hw
annotate fc-uja/schem+bom/vsrc/eeprom_93Cx6_16bit.v @ 28:bd7eec55ebc0
duart28: new design ideas
* added input buffers (LVC with Ioff feature) to prevent high current flow
from powered-up target into powered-down FT2232D inputs;
* added series resistors on outputs to limit current flow from powered-up
adapter into powered-down Calypso target;
* buffer IC changed from 74LVC125A to 74LVC541A.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 28 Jun 2020 22:06:24 +0000 |
parents | 0f9bdd60ce50 |
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0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 module eeprom_93Cx6_16bit (GND, VCC, CS, SK, DIN, DOUT); |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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3 input GND, VCC; |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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4 input CS, SK, DIN; |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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5 output DOUT; |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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6 |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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7 /* instantiate the package; the mapping of signals to pins is defined here */ |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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8 |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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9 pkg_8pin pkg (.pin_1(CS), |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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10 .pin_2(SK), |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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11 .pin_3(DIN), |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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12 .pin_4(DOUT), |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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13 .pin_5(GND), |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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14 .pin_6(VCC), /* ORG input on some 93Cx6 variants */ |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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15 .pin_7(), /* no connect */ |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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16 .pin_8(VCC) |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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17 ); |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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18 |
0f9bdd60ce50
fc-small-hw separated from old freecalypso-schem repo
Mychaela Falconia <falcon@freecalypso.org>
parents:
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19 endmodule |