Entity: UartAxiLiteMasterFsm
- File: UartAxiLiteMasterFsm.vhd
Diagram
Description
Title : UART Memory Protocol: https://confluence.slac.stanford.edu/x/uSDoDQ
Company : SLAC National Accelerator Laboratory
Description: Finite State Machine (FSM) for UartAxiLiteMaster.vhd
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 |
Ports
| Port name | Direction | Type | Description |
|---|---|---|---|
| axilClk | in | sl | Clock and Reset |
| axilRst | in | sl | |
| uartTxValid | out | sl | UART TX Streaming Byte Interface |
| uartTxData | out | slv(7 downto 0) | |
| uartTxReady | in | sl | |
| uartRxValid | in | sl | UART RX Streaming Byte Interface |
| uartRxData | in | slv(7 downto 0) | |
| uartRxReady | out | sl | |
| mAxilWriteMaster | out | AxiLiteWriteMasterType | AXI-Lite interface |
| mAxilWriteSlave | in | AxiLiteWriteSlaveType | |
| mAxilReadMaster | out | AxiLiteReadMasterType | |
| mAxilReadSlave | in | AxiLiteReadSlaveType |
Signals
| Name | Type | Description |
|---|---|---|
| r | RegType | |
| rin | RegType | |
| axilAck | AxiLiteAckType |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| REG_INIT_C | RegType | ( state => WAIT_START_S, count => (others => '0'), axilReq => AXI_LITE_REQ_INIT_C, rdData => (others => '0'), uartTxData => (others => '0'), uartTxValid => '0', uartRxReady => '1') |
Types
| Name | Type | Description |
|---|---|---|
| StateType | ( WAIT_START_S, SPACE_ADDR_S, ADDR_SPACE_S, WR_DATA_S, WAIT_EOL_S, AXIL_TXN_S, RD_DATA_SPACE_S, RD_DATA_S, DONE_S) |
|
| RegType |
Functions
- hexToSlv (hex : slv(7 downto 0)) return slv
Description
translate a hex character 0-9 A-F into an slv
- slvToHex (nibble : slv(3 downto 0)) return slv
Processes
- comb: ( axilAck, axilRst, r, uartRxData, uartRxValid, uartTxReady )
Description
[in]
- seq: ( axilClk )
Instantiations
- U_AxiLiteMaster_1: surf.AxiLiteMaster