view venus/src/core/rf_fem_block.v @ 39:3becdb3b6dce

implement USB domain load resistor as proposed in document
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Nov 2021 23:08:09 +0000
parents 3ed0f7a9c489
children
line wrap: on
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/*
 * This module encapsulates the RF FEM (quadband M034F) along with the PNP
 * transistors and R/C footprints to GND for the control lines, and the cap
 * on the antenna output.
 */

module rf_fem_block (GND, VREG3, Ctrl_Tx_Low, Ctrl_Tx_High, Ctrl_Rx_850,
		     RX_LOW1, RX_LOW2, RX_DCS1, RX_DCS2, RX_PCS1, RX_PCS2,
		     TX_LOW, TX_HIGH, ANT);

input GND, VREG3;
input Ctrl_Tx_Low, Ctrl_Tx_High, Ctrl_Rx_850;

output RX_LOW1, RX_LOW2, RX_DCS1, RX_DCS2, RX_PCS1, RX_PCS2;
input TX_LOW, TX_HIGH;
inout ANT;

wire ANT_before_cap;
wire V_TX_LOW, V_TX_HIGH, V_RX_850;

/* transform control signals through PNP transistors */

transistor_slot PNP_FEM7 (.E(VREG3), .B(Ctrl_Tx_Low), .C(V_TX_LOW));
transistor_slot PNP_FEM8 (.E(VREG3), .B(Ctrl_Tx_High), .C(V_TX_HIGH));
transistor_slot PNP_FEM9 (.E(VREG3), .B(Ctrl_Rx_850), .C(V_RX_850));

/* instantiate the M034F */

M034F M034F (.ANT(ANT_before_cap),
	     .GND(GND),
	     .RX_LOW1(RX_LOW1),
	     .RX_LOW2(RX_LOW2),
	     .RX_DCS1(RX_DCS1),
	     .RX_DCS2(RX_DCS2),
	     .RX_PCS1(RX_PCS1),
	     .RX_PCS2(RX_PCS2),
	     .TX_LOW(TX_LOW),
	     .TX_HIGH(TX_HIGH),
	     .V_TX_LOW(V_TX_LOW),
	     .V_TX_HIGH(V_TX_HIGH),
	     .V_RX_850(V_RX_850)
	);

capacitor C635 (ANT_before_cap, ANT);

capacitor C645 (V_TX_LOW, GND);
capacitor C644 (V_TX_HIGH, GND);
capacitor C643 (V_RX_850, GND);

endmodule