FreeCalypso > hg > freecalypso-schem2

diff venus/src/periph/bl_current_select.v @ 47:9f5a3567d699

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progress toward LCD integration
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 27 Nov 2021 02:09:46 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/venus/src/periph/bl_current_select.v	Sat Nov 27 02:09:46 2021 +0000
@@ -0,0 +1,24 @@
+module bl_current_select (GND, Vio, BL_GPIO11, BL_GPIO12, SET);
+
+input GND, Vio;
+input BL_GPIO11, BL_GPIO12;
+output SET;
+
+wire buf_out_GPIO11, buf_out_GPIO12;
+
+/* U403 buffer common part */
+logic_ic_common U403_common (.Vcc(Vio), .GND(GND));
+
+/* bypass capacitor */
+capacitor U403_bypass (Vio, GND);
+
+/* buffer slots */
+buffer_slot_3state buf_GPIO11 (.A(Vio), .nOE(BL_GPIO11), .Y(buf_out_GPIO11));
+buffer_slot_3state buf_GPIO12 (.A(Vio), .nOE(BL_GPIO12), .Y(buf_out_GPIO12));
+
+/* MAX1916 current control resistors */
+resistor R_fixed  (Vio, SET);
+resistor R_GPIO11 (buf_out_GPIO11, SET);
+resistor R_GPIO12 (buf_out_GPIO12, SET);
+
+endmodule