Communication series P3 : AMBA AXI in Verilog

Explore the simplest ready handshake in the extreme interface, examine its signals, and understand the write and read operations while building an AXI master and slave in Verilog.

Explore AXI stream interface signals, including clock, reset, t valid, t ready, t data with t strobe, t last, and optional t id, t destination, t user, and t wakeup.

Explain how tkip and tcp allocate per-byte qualifiers across eight AXI stream lanes, using tdata, t strobe, and d strobe to distinguish valid data, position bytes, and padding.

Explore the AXI stream interface and its five channels for master–slave data transfer, with address/control, data, write and read channels, and t last and t user signals for packet delimitation.

Exchange bursts between master and slave via a minimal AXI stream with tvalid, tready, tdata, and tlast. Reduce overhead by omitting address and control channels for high-speed point-to-point transfers.

Learn three ways to implement an AXI interface on a Xilinx FPGA: RTL from scratch, a Vivado template, and HLS, and compare latency and development time.

Implement a minimal AXI stream master in Verilog with essential m axis signals, ready, valid, data, and last. Learn how master and slave interact using waveforms for streaming transactions.

Explore axi stream fundamentals with valid, tdata, tready, and tlast; compare three master-slave transactions, explaining no address transfer, backpressure handling, and data hold when tready is low.

Master AXI stream fundamentals by examining t valid, t data, t last, and t ready handshakes, and learn how to hold data until the slave is ready during multi-byte transfers.

Design a Verilog AXIS master that streams four-byte transactions with de valid, t data, and t last, coordinating with a slave using t ready in a two-state FSM.

Verify master operation in an AMBA AXI Verilog design by simulating five transfers of four bytes each, using t valid, t ready, and t last with clocked stimulus.

Build and understand an AXIS slave interface by implementing data transfer using t valid, t ready, t last, and t data signals, synchronized to the s axis clock and reset.

Design an axis slave axis_s using idle and store states to sample t_valid data, drive t_ready in store, and output d_out until the last byte (t_last).

Verifying axis slave operation in Verilog, leveraging logic type ports to auto form req or wire signals, and validating master–slave handshaking with tvalid, tdata, tready, and tlast under random transfers.

Connect master and slave in an amba axi verilog design by wiring tdata, tvalid, tready, and tlast across a top module, and implement a testbench that generates transactions.

Explore building ips around an axi stream interface, starting with a round robin arbiter in Verilog and then adding an extra stream interface and an axi fifo common in Ethernet.

Explore a verilog round robin arbiter for an amba axi style stream interface, granting requests with priority and fair access, handling two requests and reset behavior.

Design a two-request round-robin arbiter in Verilog, modeling an idle state and two service states (S1, S2), with grant outputs and a reset-driven FSM, guided by a next-state/output decoder.

Explore a Verilog round robin arbiter for AMBA AXI, testing grant one and grant two with single and dual requests, reset sequencing, and alternating grants to share resources fairly.

Design an axis arbiter that selects between two input axis slave interfaces and forwards transactions to a single axis master, using fixed priority and a shared clock and ready/valid handshake.

Implement a verilog axis arbiter for a two-master axis stream with two slave interfaces, ready/valid handshakes, tlast tracking, and priority to slave one over slave two.

Implement logic for the arbiter’s output ports, driving t data, t last, and t valid from a valid slave transaction, and verify with a testbench injecting single and dual transactions.

Demonstrates a Verilog AMBA AXI test bench setup with tb access aperture, port mapping, clocked stimulus, tvalid/tready, tdata, tlast, and arbiter across two slave interfaces.

Extend a fifo with an AXI-Stream interface, buffering tvalid, tready, tdata, and tlast for reliable x-stream transactions. Build and test a simple fifo with master and slave ports.

Explore two axis fifo approaches: wait for t ready before t valid, and push data when valid, using a 16-depth, 8-bit memory with write/read pointers, keep/last flags, and full/empty logic.

Demonstrate implementing and testing an axis fifo in verilog using a 20 ns clock, reset sequencing, and random stimuli to verify write and read with tdata, tvalid, and tready.

Demonstrates axis fifo alternate implementation in verilog using continuous assignment to output data when the fifo has data, driven by read and write pointers with t data and t valid.

Explore axi lite as the next interface after streaming, distinguishing bit transfer from transactions and single-bit versus burst transfers, and examine channel signals for read and write transactions.

Distinguish transaction, transfer, and bit within AMBA AXI, detailing address, data, and response channels and the full transaction lifecycle.

Explore the write address channel in the axi protocol, covering aw address, aw size, aw length, aw burst, aw id, the w valid/ready handshake, starting address, and burst length.

Learn how channel IDs uniquely tag AXI transactions in single-bit no-pipeline and pipeline modes. Identify how IDs enable matching responses to their transactions even when data arrives out of order.

Understand the write data channel in amba axi: master transfers 32-bit data in four bytes via w valid and w ready, with w stroke indicating valid bytes and w last.

Explore the write response channel: master and slave use be ready, be valid, be ID, and be response, with bid matching aw id and bresp indicating ok after last transfer.

Identify the four AXI transaction responses: ok for normal reads/writes, x ok for exclusive access, slb error, decode error, and note w lock enabling exclusive single or multiple transactions.

Learn how the AXI read channel uses the read address channel and read data channel to transfer address, size, burst, and length, delivering data and response.

Master drives RTD; slave returns R valid, read data, strobe, and last bit high on read data channel, while the read address channel participates. Four signal combinations define read/write access.

Explore AXI lite signals for write and read transactions, including master–slave handshakes on address, data, and response channels with clock and active-low reset.

Explore the waveform based approach to implementing an axi light interface, covering single bit configurations, write/read operations, and master-slave integration with an axi protocol checker.

Explore four AXI configurations: single bit without pipeline, single bit with pipeline, burst without pipeline, and burst with pipeline, with address, data, and response phases, and their typical applications.

Compare waveform based and FSM based implementations for an AMBA AXI XY interface, detailing an address handshake with valid and ready, and illustrating Verilog code from reset onward.

Explore single beat without pipeline in a master and slave AMBA AXI configuration, focusing on w valid, w ready, w address, w data, and be valid, be response signaling.

Apply an address, wait for a response, and perform a write transaction between master and slave in an amba axi interface, using write address and write data channels.

Implement a non pipelined amba axi i/o port transaction in verilog, detailing address phase, write address, write data, and write response channels, master/slave handshakes, 32-bit lanes, and synchronous active-low reset.

The lecture shows how AMBA AXI axil master implements write channel by initializing signals, asserting w valid with data and address, and waiting for w ready and b valid.

Implement a write-only axil master in verilog, initializing w data and w strobe to zero, driving input data on write channels and holding it until w valid and w ready.

Showcase how an axil slave handles a write transaction by receiving the write address and data channels, asserting wready on wvalid, and updating memory when valid address and data arrive.

Implement a write-only axil slave by sampling w_valid data, updating a 32-bit memory of 16 locations when address is in range, and issuing proper b channel responses or errors.

build and simulate a verilog amba axi write channel testbench to verify ten random master–slave write transactions, including address and data, with wvalid/wready and bvalid/bready handshakes and memory range checks.

Validate AXI transactions using a Vivado protocol checker by sampling master signals, tracking PC status and PC assert, aided by a testbench converting SystemVerilog to Verilog to verify rule conformance.

Build a block design with master and slave, wire ports, and integrate an AXI protocol checker to validate transactions, using mxc and sxc clock/reset naming conventions.

Connect a testbench to the design, drive AXI stimuli, and use a protocol checker to validate write and read transactions, ensuring master adherence to AXI rules.

Learn to implement the amba axi read channels in Verilog, adding read address and read data paths. Use arvalid/arready and rvalid/rready handshakes to transfer read data and response.

Designs an AMBA AXI master with a read-only implementation and explains arvalid, araddr, rvalid, rdata, and ready handshakes, using a wait-for-read-data flag to complete a single read transaction.

Learn how an AXIL master implements the read channel, managing R address and R data with R ready and R valid handshakes and sampling the data and response.

Implement a read-only axil slave with clock and reset, handling r_valid, r_ready, r_data, and r_response. Use an FSM to generate data ready after two-cycle memory latency, with single clock valid.

this lecture demonstrates implementing an AXI lite read slave in Verilog with an FSM handling data ready and r_valid, plus address-based responses and a test bench.

connects a master and slave with a top module, exposing address, write clock, and reset, and wires data and response through the AXI interface to illustrate the AXI master–slave connection.

Generate address stimuli, clock and reset signals, and monitor read data and ready in a verilog testbench to verify operation of AMBA AXI with ten random reads on the slave.

Verify a read transaction in a Verilog amba axi design by coordinating master and slave signals, wait-for-data, data-ready, and r-data fsm to deliver valid data from address seven.

We demonstrate a testbench that generates axi write and read stimuli between a master and slave, and integrate an axi protocol checker ip to validate transactions.

Verify the AXI protocol checker analyzes write and read transactions between master and slave, confirms memory updates from 0 to 9, and shows no pc violations throughout simulation.

Organize master, slave, and protocol checker signals into groups in vivado, relaunch the simulation, and verify axi protocol checker reports no errors during single-bit, non-pipelined write and read transactions.

Explore an FSM-based approach to building an AXI interface, implementing write and read operations with a master and slave, connected and checked by a protocol checker for correct transactions.

Explore building an AXI master FSM from a waveform by converting it into a flow chart, then implement write and read flows with timeout handling and ready/valid signaling.

Implement Verilog AXI lite master to initiate write and read operations with a slave via txi, drive an FSM, and exchange 32-bit addresses and data through all channels with timeouts.

Master implementation P1 write demonstrates a nine-state AMBA AXI Verilog write FSM with independent reset, decoders, and a 15-clock timeout; read paths mirror it.

Implement the master write path by handling w address and w data handshakes, awaiting b valid, then complete write transaction or handle 15-clock timeouts and no slave write response.

Implement a seven-state AMBA AXI read operation in Verilog using a three-bit state and a 0 to 15 timeout counter, with address, valid, ready, data, and timeout signals.

Verify the master in a Verilog testbench by driving clock and reset, applying valid write and read transactions, and validating slave ready signals, timeout counters, and an FSM workflow.

Build an AXI lite GPIO slave IP that generates data from wdata and wstrb to drive an LED and read switches, decoding peripheral offsets and handling write and read transactions.

Learn how to implement debouncing for switches and buttons in Verilog by sampling the switch, waiting a 10–20 ms debounce period, and updating the switch register only when stable.

Implement a single FSM to handle AXI lite write and read for a Verilog GPIO IP, updating LED and switch registers and generating master responses.

Build a AXI lite GPIO read FSM that accepts the read address, buffers it in a temporary variable, fetches the data, and emits read data with delay and ready signaling.

Test the axi lite gpio ip by performing write and read transactions to the led and switch registers, using clock, reset, and proper wvalid, wdata, and rvalid signaling.

Explore how AXI burst transactions are handled without a pipeline, detailing awsize, awburst, and awlen, fixed/increment/wrap burst modes, and write and read sequences.

Follow a write operation FSM for an AXI-like interface: reset, idle, send address, wait for ready within 15 clocks, transmit burst data with wvalid and wlast, await response.

Implement a read transaction flow for AMBA AXI in Verilog by sending the read address, waiting for valid data, sampling on the data bus, and using rlast with timeout logic.

Implement a Verilog AMBA AXI master write channel, detailing write address and data paths, burst handling, and waiting for the write response.

Implement the AXI read channel by sending the read address, waiting for the slave to receive it, then reading data and recognizing the last bit to complete the read transaction.

Implement a slave write operation for an AMBA AXI interface in Verilog by validating addresses, managing bursts, sampling w data and strobe, updating a 16-location memory, and signaling write acknowledgments.

Learn the verilog amba axi slave read operation: validate read address and length, fetch data from memory with two-cycle latency, and stream it on rdata with valid and last signaling.

Connect the AXI master and slave to a protocol checker to verify transaction correctness. Use a testbench to drive clock, reset, and read/write bursts, monitor be_valid, last, and read responses.

Conclude the module by examining burst modes in Verilog, building a master and slave that support burst modes, and implementing next-address prediction to enable your own axi ip.

Explore fixed burst mode in AMBA AXI, compute burst length from w length, and see how the address remains constant, with examples on debouncing a switch and byte-oriented memory writes.

Implement fixed mode during write by using the same starting address for all bits of a burst, with a strobe-driven update to a byte-oriented memory.

Use increment mode to address each burst beat at one higher address than the previous, as in a burst starting at address 30 with 32‑bit data and wstrobe driven writes.

Understand how to implement INCR mode in AMBA AXI write by computing the next address with a data write increment function, handling wstop, byte lanes, and memory sizes.

Learn wrap mode in amba axi verilog, computing wrap boundaries from starting address, burst length, and byte size, and apply modulus-based wrapping to cyclic addresses.

Explore wrap mode in AMBA AXI write with Verilog, focusing on enforcing burst length as a power of two, calculating wrap boundaries, and computing next addresses to prevent gaps.

Explain burst mode handling for read operations in AMBA AXI in Verilog, covering fixed, increment, and wrap modes, with functions that compute the next address.

Implement an axi master in Verilog, detailing an idle-to-operation state machine for write and read transactions. Coordinate address, w data, burst length, last bit signaling, and slave responses.

Explore implementing a slave write in AMBA AXI using a sleeve module that predicts next-bit addresses, manages burst modes, and coordinates memory read/write via a finite state machine.

Learn how to implement a slave read in an AMBA AXI interface using Verilog, validating address and burst length, fetching memory data, and signaling ready and response ok.

Connect the master and slave in structural AXI modeling, wire the signals, add a protocol checker, and verify write and read bursts in increment and fixed modes.