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62 lines
3.2 KiB
Coq
62 lines
3.2 KiB
Coq
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//#############################################################################
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//# Purpose: DMA sequencer #
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//#############################################################################
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//# Author: Andreas Olofsson #
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//# License: MIT (see below) #
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//#############################################################################
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module edma_ctrl (/*AUTOARG*/
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// Outputs
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dma_state, outerloop, master_active, update,
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// Inputs
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clk, nreset, dma_en, chainmode, mastermode, access_in, wait_in
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);
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// clk, reset, config
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input clk; // main clock
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input nreset; // async active low reset
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input dma_en; // dma is enabled
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input chainmode; // chainmode configuration
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input mastermode; // dma configured in mastermode
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// packet control
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input access_in; // slave access
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input wait_in; // controls machine stall
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// status
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output [2:0] dma_state; // state of dma
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output outerloop; // dma currently in outerloop (2D)
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output master_active;// master is active
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output update; // update registers
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assign update = ~wait_in &
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(master_active | access_in);
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endmodule // edma_ctrl
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///////////////////////////////////////////////////////////////////////////////
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// The MIT License (MIT) //
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// //
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// Copyright (c) 2015-2016, Adapteva, Inc. //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software") //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included //
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// in all copies or substantial portions of the Software. //
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// //
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS //
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF //
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. //
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY //
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT //
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// OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR //
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// THE USE OR OTHER DEALINGS IN THE SOFTWARE. //
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// //
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///////////////////////////////////////////////////////////////////////////////
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