What scenario we can check for DMA_FIFO using assertions?
These are the signals, Please reply!!
in_clk;
in_reset;
in_data[127:0];
in_empty[3:0];
in_endofpacket;
in_error[5:0];
in_ready;
in_startofpacket;
in_valid;
out_clk;
out_reset;
out_data[127:0];
out_empty[3:0];
out_endofpacket;
out_error[5:0];
out_ready;
out_startofpacket;
out_valid;
In reply to dave_59:
chat.openai provided some interesting responses:
Q: In computer hardware what are the requireemnts for a dma controller
CHAT.OPENAI: A DMA (Direct Memory Access) controller is a hardware device that allows data to be transferred between peripheral devices and memory without involving the CPU. The following are some of the requirements for a DMA controller:
Memory Interface: The DMA controller should have an interface to access the memory. It should be able to read and write data to the memory.
Data Bus: The DMA controller should have a data bus to transfer data between the peripheral devices and memory. The data bus should be of appropriate width and speed to transfer the data efficiently.
Channel: The DMA controller should have multiple channels to allow multiple devices to transfer data simultaneously.
Interrupts: The DMA controller should support interrupts to notify the CPU when a transfer is complete or if there is an error.
Address Generation: The DMA controller should be able to generate memory addresses for data transfer. It should be able to increment or decrement the address automatically.
Priority: The DMA controller should have a priority mechanism to decide which channel should be serviced first in case of multiple simultaneous requests.
Control Logic: The DMA controller should have control logic to manage data transfer between devices and memory.
Compatibility: The DMA controller should be compatible with the peripheral devices and memory to ensure efficient data transfer.
Overall, the DMA controller should be designed to provide fast and efficient data transfer between peripheral devices and memory, without requiring CPU intervention.
Q: In computer hardware what are the requireemnts for a fifo
CHAT.OPENAI: A FIFO (First In, First Out) is a hardware buffer that allows data to be temporarily stored for sequential processing. The following are some of the requirements for a FIFO:
Data Bus: The FIFO should have a data bus to transfer data between the input and output ports. The data bus should be of appropriate width and speed to transfer the data efficiently.
Control Signals: The FIFO should have control signals to manage data transfer between the input and output ports. These signals typically include write enable, read enable, clear, and reset.
Buffer Size: The FIFO should have a specified buffer size to determine the maximum amount of data that can be stored.
Interrupts: The FIFO should support interrupts to notify the CPU when the buffer is full or empty.
Clock: The FIFO should be driven by a clock signal to ensure proper synchronization between the input and output ports.
Error Handling: The FIFO should have error handling mechanisms in case of overflow or underflow conditions.
Compatibility: The FIFO should be compatible with the peripheral devices and memory to ensure efficient data transfer.
Overall, the FIFO should be designed to provide temporary storage of data for sequential processing, with appropriate control signals, buffer size, clock, and error handling mechanisms.
Hi Sir,
How to write the assertions for wr_ptr_overflow and rd_ptr_underflow for FIFO. I need too check
the packets of 200. I am not able to understand how to write. Here I am using DMA_FIFO as an interface. Two fifo’s are there…
Thanks
Prity S
In reply to prity_sinha:
Overlow is a push on full.
underflow is a pop on empty.
Thus, the properties are
not(push && full)
not (pop && empty)