Entity: SsiCmdMaster
- File: SsiCmdMaster.vhd
Diagram
Description
Title : SSI Protocol: https://confluence.slac.stanford.edu/x/0oyfD
Company : SLAC National Accelerator Laboratory
Description: Block for Command protocol over the VC. The receive packet is 4 x 32-bits. Word 0 Data[1:0] = VC (unused, legacy) Word 0 Data[7:2] = Dest_ID (unused, legacy) Word 0 Data[31:8] = CmdCtx[31:0] (unused, legacy) Word 1 Data[7:0] = OpCode[7:0] Word 1 Data[31:8] = Don't Care Word 2 = Don't Care
Word 3 = Don't Care
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 | |
| SLAVE_READY_EN_G | boolean | false | AXI Stream FIFO Config |
| MEMORY_TYPE_G | string | "distributed" | |
| GEN_SYNC_FIFO_G | boolean | false | |
| CASCADE_SIZE_G | integer range 1 to (2**24) | 1 | |
| FIFO_ADDR_WIDTH_G | integer range 4 to 48 | 5 | |
| FIFO_FIXED_THRESH_G | boolean | true | |
| FIFO_PAUSE_THRESH_G | integer range 1 to (2**24) | 8 | |
| AXI_STREAM_CONFIG_G | AxiStreamConfigType | AXI Stream Configuration |
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| axisClk | in | sl | Streaming Data Interface |
| axisRst | in | sl | |
| sAxisMaster | in | AxiStreamMasterType | |
| sAxisSlave | out | AxiStreamSlaveType | |
| sAxisCtrl | out | AxiStreamCtrlType | |
| cmdClk | in | sl | Command signals |
| cmdRst | in | sl | |
| cmdMaster | out | SsiCmdMasterType |
Signals
| Name | Type | Description |
|---|---|---|
| fifoAxisMaster | AxiStreamMasterType | |
| fifoAxisSlave | AxiStreamSlaveType | |
| r | RegType | |
| rin | RegType |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| REG_INIT_C | RegType | ( txnNumber => (others => '0'), cmdMaster => SSI_CMD_MASTER_INIT_C ) |
|
| INT_CONFIG_C | AxiStreamConfigType | ssiAxiStreamConfig(4) |
Types
| Name | Type | Description |
|---|---|---|
| StateType | (IDLE_S, CMD_S, DUMP_S) |
|
| RegType |
Processes
- comb: ( cmdRst, fifoAxisMaster, r )
- seq: ( cmdClk )
Instantiations
- SlaveAxiStreamFifo: surf.AxiStreamFifoV2