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oh/emesh/hdl/emesh2packet.v
Andreas Olofsson 46687fe7fd New packet format
* Removed acess at bit [0], was redundant...
* Frees up one more bit for ctrlmode
2015-11-02 20:52:27 -05:00

51 lines
1.6 KiB
Verilog

/*Converts an emesh bundle into a 104 bit packet*/
module emesh2packet(/*AUTOARG*/
// Outputs
packet_out,
// Inputs
write_in, datamode_in, ctrlmode_in, dstaddr_in, data_in,
srcaddr_in
);
parameter AW=32;
parameter DW=32;
parameter PW=104;
//Emesh signal bundle
input write_in;
input [1:0] datamode_in;
input [3:0] ctrlmode_in;
input [AW-1:0] dstaddr_in;
input [DW-1:0] data_in;
input [AW-1:0] srcaddr_in;
//Output packet
output [PW-1:0] packet_out;
assign packet_out[0] = write_in;
assign packet_out[2:1] = datamode_in[1:0];
assign packet_out[7:3] = {1'b0,ctrlmode_in[3:0]};
assign packet_out[39:8] = dstaddr_in[AW-1:0];
assign packet_out[71:40] = data_in[AW-1:0];
assign packet_out[103:72] = srcaddr_in[AW-1:0];
endmodule // emesh2packet
/*
Copyright (C) 2015 Adapteva, Inc.
Contributed by Andreas Olofsson <support@adapteva.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program (see the file COPYING). If not, see
<http://www.gnu.org/licenses/>.
*/