Entity: SlvDelayRamTb
- File: SlvDelayRamTb.vhd
Diagram
Description
Company : SLAC National Accelerator Laboratory
Description: Simulation Testbed for the SlvDelayRam 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.
Signals
| Name | Type | Description |
|---|---|---|
| r | RegType | |
| rin | RegType | |
| clk | sl | |
| rst | sl | |
| din | slv(WIDTH_C - 1 downto 0) | |
| dout | slv(WIDTH_C - 1 downto 0) | |
| maxCount | slv(MAX_COUNT_BITS_C - 1 downto 0) | |
| passed | sl | |
| failed | sl |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| CLK_PERIOD_C | time | 4 ns | |
| TPD_C | time | CLK_PERIOD_C/4 | |
| WIDTH_C | integer | 16 | |
| MAX_DELAY_C | integer | 514 | |
| DELAY_C | integer | MAX_DELAY_C | |
| DO_REG_C | boolean | true | |
| MEMORY_TYPE_C | string | "block" | |
| MAX_COUNT_BITS_C | integer | log2(MAX_DELAY_C - ite(DO_REG_C, 2, 1)) |
may save a bit if MAX_DELAY is just over pow2 ex 514 elements only needs 9 bits |
| MAX_COUNT_C | integer | DELAY_C - ite(DO_REG_C, 3, 2) |
delay = maxCount + ite(DO_REG_G, 3, 2); |
| REG_INIT_C | RegType | ( passed => '0', failed => '0', count => 0, countDelay => (others => 0)) |
Types
| Name | Type | Description |
|---|---|---|
| countDelayType | ||
| RegType |
Processes
- comb: ( dout, r, rst )
Description
----------------------------------------------- FSM to sweep through all possible combination ----------------------------------------------
- seq: ( clk )
- unnamed: ( failed, passed )
Instantiations
- U_ClkRst: surf.ClkRst
- U_SlvDelayRam: surf.SlvDelayRam