Description of test platform and hardware design

Test platform

• Test platform （testbench） It is the general name of the whole verification system

• Including various components in the verification structure 、 The connection relationship between components 、 Configuration and control of test platform

• In a more systematic sense , It also includes the process of compiling simulation 、 Result analysis report and coverage check, etc

• In a narrow sense , We mainly focus on the structure and component parts of the verification platform , They can produce all kinds of inputs required by the design , The design function will also be checked on this basis

• The components are independent of each other

• Verify the connection between the component and the design

• Communication between validation components is also required , Communication is needed between components and design

• The verification environment also requires the drive of clock and reset signal

Hardware design description

Hardware design description includes structure 、 function 、 Registers and timing

Understand the data protocol at each interface

Register is the interface between all hardware and the outside world （ Hardware and processors , Hardware and hardware ）

The data at the register must be less than FIFO The depth of the ？ Relationship between them ？

FIFO depth 128, For registers 0x10 Initiate a write operation , Write data 0xFFFF, When reading from this address after a period of time , Possible values ？  A 0xFFFF    B 0x00FF  C 0x0080  D 0x0000

The answer for C、D. because FIFO Depth is 12, Therefore, the data range is 0x000~0x0080 Between ？ Why is the number read out related to the data margin .