//////////////////////////////////////////////////////////////////////
//// ////
//// usbSlave.v ////
//// ////
//// This file is part of the usbhostslave opencores effort.
//// ////
//// ////
//// Module Description: ////
//// Top level module
//// ////
//// To Do: ////
////
//// ////
//// Author(s): ////
//// - Steve Fielding, sfielding@base2designs.com ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2008 Steve Fielding and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from ////
//// ////
//////////////////////////////////////////////////////////////////////
//
`include "timescale.v"
module usbSlave(
clk_i,
rst_i,
address_i,
data_i,
data_o,
we_i,
strobe_i,
ack_o,
usbClk,
slaveVBusDetIntOut,
slaveNAKSentIntOut,
slaveSOFRxedIntOut,
slaveResetEventIntOut,
slaveResumeIntOut,
slaveTransDoneIntOut,
USBWireDataIn,
USBWireDataInTick,
USBWireDataOut,
USBWireDataOutTick,
USBWireCtrlOut,
USBFullSpeed,
USBDPlusPullup,
USBDMinusPullup,
vBusDetect
);
parameter EP0_FIFO_DEPTH = 64;
parameter EP0_FIFO_ADDR_WIDTH = 6;
parameter EP1_FIFO_DEPTH = 64;
parameter EP1_FIFO_ADDR_WIDTH = 6;
parameter EP2_FIFO_DEPTH = 64;
parameter EP2_FIFO_ADDR_WIDTH = 6;
parameter EP3_FIFO_DEPTH = 64;
parameter EP3_FIFO_ADDR_WIDTH = 6;
input clk_i; //Wishbone bus clock. Maximum 5*usbClk=240MHz
input rst_i; //Wishbone bus sync reset. Synchronous to 'clk_i'. Resets all logic
input [7:0] address_i; //Wishbone bus address in
input [7:0] data_i; //Wishbone bus data in
output [7:0] data_o; //Wishbone bus data out
input we_i; //Wishbone bus write enable in
input strobe_i; //Wishbone bus strobe in
output ack_o; //Wishbone bus acknowledge out
input usbClk; //usb clock. 48Mhz +/-0.25%
output slaveSOFRxedIntOut;
output slaveResetEventIntOut;
output slaveResumeIntOut;
output slaveTransDoneIntOut;
output slaveNAKSentIntOut;
output slaveVBusDetIntOut;
input [1:0] USBWireDataIn;
output [1:0] USBWireDataOut;
output USBWireDataOutTick;
output USBWireDataInTick;
output USBWireCtrlOut;
output USBFullSpeed;
output USBDPlusPullup;
output USBDMinusPullup;
input vBusDetect;
wire clk_i;
wire rst_i;
wire [7:0] address_i;
wire [7:0] data_i;
wire [7:0] data_o;
wire we_i;
wire strobe_i;
wire ack_o;
wire usbClk;
wire slaveSOFRxedIntOut;
wire slaveResetEventIntOut;
wire slaveResumeIntOut;
wire slaveTransDoneIntOut;
wire slaveNAKSentIntOut;
wire slaveVBusDetIntOut;
wire [1:0] USBWireDataIn;
wire [1:0] USBWireDataOut;
wire USBWireDataOutTick;
wire USBWireDataInTick;
wire USBWireCtrlOut;
wire USBFullSpeed;
wire USBDPlusPullup;
wire USBDMinusPullup;
wire vBusDetect;
//internal wiring
wire slaveControlSel;
wire hostSlaveMuxSel;
wire [7:0] dataFromSlaveControl;
wire [7:0] dataFromHostSlaveMux;
wire [7:0] RxCtrlOut;
wire [7:0] RxDataFromSIE;
wire RxDataOutWEn;
wire fullSpeedBitRateFromSlave;
wire fullSpeedPolarityFromSlave;
wire SIEPortWEnFromSlave;
wire SIEPortTxRdy;
wire [7:0] SIEPortDataInFromSlave;
wire [7:0] SIEPortCtrlInFromSlave;
wire [1:0] connectState;
wire resumeDetected;
wire [7:0] SIEPortDataInToSIE;
wire SIEPortWEnToSIE;
wire [7:0] SIEPortCtrlInToSIE;
wire fullSpeedPolarityToSIE;
wire fullSpeedBitRateToSIE;
wire connectSlaveToHost;
wire noActivityTimeOut;
wire TxFifoEP0REn;
wire TxFifoEP1REn;
wire TxFifoEP2REn;
wire TxFifoEP3REn;
wire [7:0] TxFifoEP0Data;
wire [7:0] TxFifoEP1Data;
wire [7:0] TxFifoEP2Data;
wire [7:0] TxFifoEP3Data;
wire TxFifoEP0Empty;
wire TxFifoEP1Empty;
wire TxFifoEP2Empty;
wire TxFifoEP3Empty;
wire RxFifoEP0WEn;
wire RxFifoEP1WEn;
wire RxFifoEP2WEn;
wire RxFifoEP3WEn;
wire RxFifoEP0Full;
wire RxFifoEP1Full;
wire RxFifoEP2Full;
wire RxFifoEP3Full;
wire [7:0] slaveRxFifoData;
wire [7:0] dataFromEP0RxFifo;
wire [7:0] dataFromEP1RxFifo;
wire [7:0] dataFromEP2RxFifo;
wire [7:0] dataFromEP3RxFifo;
wire [7:0] dataFromEP0TxFifo;
wire [7:0] dataFromEP1TxFifo;
wire [7:0] dataFromEP2TxFifo;
wire [7:0] dataFromEP3TxFifo;
wire slaveEP0RxFifoSel;
wire slaveEP1RxFifoSel;
wire slaveEP2RxFifoSel;
wire slaveEP3RxFifoSel;
wire slaveEP0TxFifoSel;
wire slaveEP1TxFifoSel;
wire slaveEP2TxFifoSel;
wire slaveEP3TxFifoSel;
wire rstSyncToBusClk;
wire rstSyncToUsbClk;
wire noActivityTimeOutEnableToSIE;
wire noActivityTimeOutEnableFromHost;
wire noActivityTimeOutEnableFromSlave;
// This is not a bug.
// USBFullSpeed controls the PHY edge speed.
// The only time that the PHY needs to operate with low speed edge rate is
// when the host is directly connected to a low speed device. And when this is true, fullSpeedPolarity
// will be low. When the host is connected to a low speed device via a hub, then speed can be full or low
// but according to spec edge speed must be full rate edge speed.
assign USBFullSpeed = fullSpeedPolarityToSIE;
//assign USBFullSpeed = fullSpeedBitRateToSIE;
assign USBDPlusPullup = (USBFullSpeed & connectSlaveToHost);
assign USBDMinusPullup = (~USBFullSpeed & connectSlaveToHost);
usbSlaveControl u_usbSlaveControl(
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.usbClk(usbClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.RxByteStatus(RxCtrlOut),
.RxData(RxDataFromSIE),
.RxDataValid(RxDataOutWEn),
.SIERxTimeOut(noActivityTimeOut),
.SIERxTimeOutEn(noActivityTimeOutEnableFromSlave),
.RxFifoData(slaveRxFifoData),
.connectSlaveToHost(connectSlaveToHost),
.fullSpeedRate(fullSpeedBitRateFromSlave),
.fullSpeedPol(fullSpeedPolarityFromSlave),
.SCTxPortEn(SIEPortWEnFromSlave),
.SCTxPortRdy(SIEPortTxRdy),
.SCTxPortData(SIEPortDataInFromSlave),
.SCTxPortCtrl(SIEPortCtrlInFromSlave),
.vBusDetect(vBusDetect),
.connectStateIn(connectState),
.resumeDetectedIn(resumeDetected),
.busAddress(address_i[4:0]),
.busDataIn(data_i),
.busDataOut(dataFromSlaveControl),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.SOFRxedIntOut(slaveSOFRxedIntOut),
.resetEventIntOut(slaveResetEventIntOut),
.resumeIntOut(slaveResumeIntOut),
.transDoneIntOut(slaveTransDoneIntOut),
.NAKSentIntOut(slaveNAKSentIntOut),
.vBusDetIntOut(slaveVBusDetIntOut),
.slaveControlSelect(slaveControlSel),
.TxFifoEP0REn(TxFifoEP0REn),
.TxFifoEP1REn(TxFifoEP1REn),
.TxFifoEP2REn(TxFifoEP2REn),
.TxFifoEP3REn(TxFifoEP3REn),
.TxFifoEP0Data(TxFifoEP0Data),
.TxFifoEP1Data(TxFifoEP1Data),
.TxFifoEP2Data(TxFifoEP2Data),
.TxFifoEP3Data(TxFifoEP3Data),
.TxFifoEP0Empty(TxFifoEP0Empty),
.TxFifoEP1Empty(TxFifoEP1Empty),
.TxFifoEP2Empty(TxFifoEP2Empty),
.TxFifoEP3Empty(TxFifoEP3Empty),
.RxFifoEP0WEn(RxFifoEP0WEn),
.RxFifoEP1WEn(RxFifoEP1WEn),
.RxFifoEP2WEn(RxFifoEP2WEn),
.RxFifoEP3WEn(RxFifoEP3WEn),
.RxFifoEP0Full(RxFifoEP0Full),
.RxFifoEP1Full(RxFifoEP1Full),
.RxFifoEP2Full(RxFifoEP2Full),
.RxFifoEP3Full(RxFifoEP3Full)
);
wishBoneBI u_wishBoneBI (
.address(address_i),
.dataIn(data_i),
.dataOut(data_o),
.writeEn(we_i),
.strobe_i(strobe_i),
.ack_o(ack_o),
.clk(clk_i),
.rst(rstSyncToBusClk),
.hostControlSel(),
.hostRxFifoSel(),
.hostTxFifoSel(),
.slaveControlSel(slaveControlSel),
.slaveEP0RxFifoSel(slaveEP0RxFifoSel),
.slaveEP1RxFifoSel(slaveEP1RxFifoSel),
.slaveEP2RxFifoSel(slaveEP2RxFifoSel),
.slaveEP3RxFifoSel(slaveEP3RxFifoSel),
.slaveEP0TxFifoSel(slaveEP0TxFifoSel),
.slaveEP1TxFifoSel(slaveEP1TxFifoSel),
.slaveEP2TxFifoSel(slaveEP2TxFifoSel),
.slaveEP3TxFifoSel(slaveEP3TxFifoSel),
.hostSlaveMuxSel(hostSlaveMuxSel),
.dataFromHostControl(8'h00),
.dataFromHostRxFifo(8'h00),
.dataFromHostTxFifo(8'h00),
.dataFromSlaveControl(dataFromSlaveControl),
.dataFromEP0RxFifo(dataFromEP0RxFifo),
.dataFromEP1RxFifo(dataFromEP1RxFifo),
.dataFromEP2RxFifo(dataFromEP2RxFifo),
.dataFromEP3RxFifo(dataFromEP3RxFifo),
.dataFromEP0TxFifo(dataFromEP0TxFifo),
.dataFromEP1TxFifo(dataFromEP1TxFifo),
.dataFromEP2TxFifo(dataFromEP2TxFifo),
.dataFromEP3TxFifo(dataFromEP3TxFifo),
.dataFromHostSlaveMux(dataFromHostSlaveMux)
);
assign SIEPortCtrlInToSIE = SIEPortCtrlInFromSlave;
assign SIEPortDataInToSIE = SIEPortDataInFromSlave;
assign SIEPortWEnToSIE = SIEPortWEnFromSlave;
assign fullSpeedPolarityToSIE = fullSpeedPolarityFromSlave;
assign fullSpeedBitRateToSIE = fullSpeedBitRateFromSlave;
assign noActivityTimeOutEnableToSIE = noActivityTimeOutEnableFromSlave;
hostSlaveMuxBI u_hostSlaveMuxBI (
.dataIn(data_i),
.dataOut(dataFromHostSlaveMux),
.address(address_i[0]),
.writeEn(we_i),
.strobe_i(strobe_i),
.usbClk(usbClk),
.busClk(clk_i),
.hostSlaveMuxSel(hostSlaveMuxSel),
.hostMode(),
.rstFromWire(rst_i),
.rstSyncToBusClkOut(rstSyncToBusClk),
.rstSyncToUsbClkOut(rstSyncToUsbClk)
);
usbSerialInterfaceEngine u_usbSerialInterfaceEngine(
.clk(usbClk),
.rst(rstSyncToUsbClk),
.USBWireDataIn(USBWireDataIn),
.USBWireDataOut(USBWireDataOut),
.USBWireDataInTick(USBWireDataInTick),
.USBWireDataOutTick(USBWireDataOutTick),
.USBWireCtrlOut(USBWireCtrlOut),
.connectState(connectState),
.resumeDetected(resumeDetected),
.RxCtrlOut(RxCtrlOut),
.RxDataOutWEn(RxDataOutWEn),
.RxDataOut(RxDataFromSIE),
.SIEPortCtrlIn(SIEPortCtrlInToSIE),
.SIEPortDataIn(SIEPortDataInToSIE),
.SIEPortTxRdy(SIEPortTxRdy),
.SIEPortWEn(SIEPortWEnToSIE),
.fullSpeedPolarity(fullSpeedPolarityToSIE),
.fullSpeedBitRate(fullSpeedBitRateToSIE),
.noActivityTimeOut(noActivityTimeOut),
.noActivityTimeOutEnable(noActivityTimeOutEnableToSIE)
);
//---Slave fifos
TxFifo #(EP0_FIFO_DEPTH, EP0_FIFO_ADDR_WIDTH) EP0TxFifo (
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoREn(TxFifoEP0REn),
.fifoEmpty(TxFifoEP0Empty),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP0TxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP0TxFifo),
.fifoDataOut(TxFifoEP0Data) );
TxFifo #(EP1_FIFO_DEPTH, EP1_FIFO_ADDR_WIDTH) EP1TxFifo (
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoREn(TxFifoEP1REn),
.fifoEmpty(TxFifoEP1Empty),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP1TxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP1TxFifo),
.fifoDataOut(TxFifoEP1Data) );
TxFifo #(EP2_FIFO_DEPTH, EP2_FIFO_ADDR_WIDTH) EP2TxFifo (
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoREn(TxFifoEP2REn),
.fifoEmpty(TxFifoEP2Empty),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP2TxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP2TxFifo),
.fifoDataOut(TxFifoEP2Data) );
TxFifo #(EP3_FIFO_DEPTH, EP3_FIFO_ADDR_WIDTH) EP3TxFifo (
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoREn(TxFifoEP3REn),
.fifoEmpty(TxFifoEP3Empty),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP3TxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP3TxFifo),
.fifoDataOut(TxFifoEP3Data) );
RxFifo #(EP0_FIFO_DEPTH, EP0_FIFO_ADDR_WIDTH) EP0RxFifo(
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoWEn(RxFifoEP0WEn),
.fifoFull(RxFifoEP0Full),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP0RxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP0RxFifo),
.fifoDataIn(slaveRxFifoData) );
RxFifo #(EP1_FIFO_DEPTH, EP1_FIFO_ADDR_WIDTH) EP1RxFifo(
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoWEn(RxFifoEP1WEn),
.fifoFull(RxFifoEP1Full),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP1RxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP1RxFifo),
.fifoDataIn(slaveRxFifoData) );
RxFifo #(EP2_FIFO_DEPTH, EP2_FIFO_ADDR_WIDTH) EP2RxFifo(
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoWEn(RxFifoEP2WEn),
.fifoFull(RxFifoEP2Full),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP2RxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP2RxFifo),
.fifoDataIn(slaveRxFifoData) );
RxFifo #(EP3_FIFO_DEPTH, EP3_FIFO_ADDR_WIDTH) EP3RxFifo(
.usbClk(usbClk),
.busClk(clk_i),
.rstSyncToBusClk(rstSyncToBusClk),
.rstSyncToUsbClk(rstSyncToUsbClk),
.fifoWEn(RxFifoEP3WEn),
.fifoFull(RxFifoEP3Full),
.busAddress(address_i[2:0]),
.busWriteEn(we_i),
.busStrobe_i(strobe_i),
.busFifoSelect(slaveEP3RxFifoSel),
.busDataIn(data_i),
.busDataOut(dataFromEP3RxFifo),
.fifoDataIn(slaveRxFifoData) );
endmodule