Entity: SelectIoRxGearboxAligner
- File: SelectIoRxGearboxAligner.vhd
Diagram
Description
Company : SLAC National Accelerator Laboratory
Description: Aligns the SELECTIO LVDS RX gearbox.
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 | |
| SIMULATION_G | boolean | false | |
| CODE_TYPE_G | string | "LINE_CODE" | or "SCRAMBLER" |
| DLY_STEP_SIZE_G | positive range 1 to 255 | 1 |
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| clk | in | sl | Clock and Reset |
| rst | in | sl | |
| lineCodeValid | in | sl | Line-Code Interface (CODE_TYPE_G = "LINE_CODE") |
| lineCodeErr | in | sl | |
| lineCodeDispErr | in | sl | |
| linkOutOfSync | in | sl | |
| rxHeaderValid | in | sl | 64b/66b Interface (CODE_TYPE_G = "SCRAMBLER") |
| rxHeader | in | slv(1 downto 0) | |
| bitSlip | out | sl | Gearbox Slip |
| dlyLoad | out | sl | IDELAY (DELAY_TYPE="VAR_LOAD") Interface |
| dlyCfg | out | slv(8 downto 0) | Ultrascale: CNTVALUEIN=dlyCfg(8 downto 0), 7-series: CNTVALUEIN=dlyCfg(8 downto 4) |
| enUsrDlyCfg | in | sl | Enable User delay config |
| usrDlyCfg | in | slv(8 downto 0) | User delay config |
| bypFirstBerDet | in | sl | Set to '1' if IDELAY full scale range > 2 Unit Intervals (UI) of serial rate (example: IDELAY range 2.5ns > 1 ns "1Gb/s" ) |
| minEyeWidth | in | slv(7 downto 0) | Sets the minimum eye width required for locking (units of IDELAY step) |
| lockingCntCfg | in | slv(23 downto 0) | Number of error-free event before state=LOCKED_S |
| errorDet | out | sl | Status Interface |
| locked | out | sl |
Signals
| Name | Type | Description |
|---|---|---|
| r | RegType | |
| rin | RegType |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| SLIP_WAIT_C | positive | 100 | |
| REG_INIT_C | RegType | ( enUsrDlyCfg => '0', usrDlyCfg => (others => '0'), dlyLoad => (others => '0'), dlyConfig => (others => '0'), dlyCache => (others => '0'), slipWaitCnt => 0, goodCnt => (others => '0'), bitSlip => '0', errorDet => '0', firstError => '0', armed => '0', scanDone => '0', locked => '0', state => UNLOCKED_S) |
Types
| Name | Type | Description |
|---|---|---|
| StateType | ( UNLOCKED_S, SLIP_WAIT_S, LOCKING_S, EYE_SCAN_S, BIT_WAIT_S, BIT_ALIGN_S, LOCKED_S) |
|
| RegType |
Processes
- comb: ( bypFirstBerDet, enUsrDlyCfg, lineCodeDispErr, lineCodeErr,
lineCodeValid, linkOutOfSync, lockingCntCfg, minEyeWidth, r,
rst, rxHeader, rxHeaderValid, usrDlyCfg )
- seq: ( clk )