Entity: jesd204_rx_cgs

Diagram

DATA_PATH_WIDTH clk reset [DATA_PATH_WIDTH-1:0] char_is_cgs [DATA_PATH_WIDTH-1:0] char_is_error ready [1:0] status_state

Description

The ADI JESD204 Core is released under the following license, which is different than all other HDL cores in this repository.

Please read this, and understand the freedoms and responsibilities you have by using this source code/core.

The JESD204 HDL, is copyright © 2016-2017 Analog Devices Inc.

This core is free software, you can use run, copy, study, change, ask questions about and improve this core. Distribution of source, or resulting binaries (including those inside an FPGA or ASIC) require you to release the source of the entire project (excluding the system libraries provide by the tools/compiler/FPGA vendor). These are the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This core 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 version 2 along with this source code, and binary. If not, see http://www.gnu.org/licenses/.

Commercial licenses (with commercial support) of this JESD204 core are also available under terms different than the General Public License. (e.g. they do not require you to accompany any image (FPGA or ASIC) using the JESD204 core with any corresponding source code.) For these alternate terms you must purchase a license from Analog Devices Technology Licensing Office. Users interested in such a license should contact jesd204-licensing@analog.com for more information. This commercial license is sub-licensable (if you purchase chips from Analog Devices, incorporate them into your PCB level product, and purchase a JESD204 license, end users of your product will also have a license to use this core in a commercial setting without releasing their source code).

In addition, we kindly ask you to acknowledge ADI in any program, application or publication in which you use this JESD204 HDL core. (You are not required to do so; it is up to your common sense to decide whether you want to comply with this request or not.) For general publications, we suggest referencing : “The design and implementation of the JESD204 HDL Core used in this project is copyright © 2016-2017, Analog Devices, Inc.”

Generics

Generic name Type Value Description
DATA_PATH_WIDTH 4

Ports

Port name Direction Type Description
clk input
reset input
char_is_cgs input [DATA_PATH_WIDTH-1:0]
char_is_error input [DATA_PATH_WIDTH-1:0]
ready output
status_state output [1:0]

Signals

Name Type Description
state reg [1:0]
rdy reg
beat_error_count reg [1:0]
beat_is_cgs wire
beat_has_error wire
beat_is_all_error wire

Constants

Name Type Value Description
CGS_STATE_INIT 2'b00
CGS_STATE_CHECK 2'b01
CGS_STATE_DATA 2'b10

Processes

Type: always

Type: always

Type: always

State machines

state transitions cluster_state state CGS_STATE_INIT CGS_STATE_INIT CGS_STATE_CHECK CGS_STATE_CHECK CGS_STATE_INIT->CGS_STATE_CHECK beat_is_cgs == 1'b1    CGS_STATE_CHECK->CGS_STATE_INIT beat_error_count == 'h3 ||    beat_is_all_error == 1'b1    beat_has_error == 1'b1    CGS_STATE_DATA CGS_STATE_DATA CGS_STATE_CHECK->CGS_STATE_DATA not (beat_has_error == 1'b1)    CGS_STATE_DATA->CGS_STATE_CHECK beat_has_error == 1'b1