Entity: HammingEccDecoder
- File: HammingEccDecoder.vhd
Diagram
Description
Title : Hamming-ECC: https://en.wikipedia.org/wiki/Hamming_code
Company : SLAC National Accelerator Laboratory
Description: Hamming-ECC Decoder Module
This file is part of 'SLAC Firmware Standard Library'. It is subject to the license terms in the LICENSE.txt file found in the top-level directory of this distribution and at: https://confluence.slac.stanford.edu/display/ppareg/LICENSE.html. No part of 'SLAC Firmware Standard Library', including this file, may be copied, modified, propagated, or distributed except according to
the terms contained in the LICENSE.txt file.
Generics
| Generic name | Type | Value | Description |
|---|---|---|---|
| TPD_G | time | 1 ns | |
| RST_POLARITY_G | sl | '1' | |
| RST_ASYNC_G | boolean | false | |
| FLOW_CTRL_EN_G | boolean | false | |
| DATA_WIDTH_G | positive | 8 |
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| clk | in | sl | Clock and Reset |
| clkEn | in | sl | Optional Clock Enable |
| rst | in | sl | Optional Reset |
| ibValid | in | sl | Inbound Interface |
| ibReady | out | sl | |
| ibData | in | slv(hammingEccDataWidth(DATA_WIDTH_G) downto 0) | +1 for the "extended parity bit" |
| obValid | out | sl | Outbound Interface |
| obReady | in | sl | |
| obData | out | slv(DATA_WIDTH_G-1 downto 0) | |
| obErrSbit | out | sl | Only 1 bit error that was corrected |
| obErrDbit | out | sl |
Signals
| Name | Type | Description |
|---|---|---|
| r | RegType | |
| rin | RegType |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| IB_DATA_WIDTH_C | positive | hammingEccDataWidth(DATA_WIDTH_G) | |
| REG_INIT_C | RegType | ( ibReady => '0', obValid => '0', obData => (others => '0'), obErrSbit => '0', obErrDbit => '0') |
Types
| Name | Type | Description |
|---|---|---|
| RegType |
Processes
- comb: ( ibData, ibValid, obReady, r, rst )
- seq: ( clk, rst )