AC320004-5

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AC320004-5 is a type of Evaluation Board that is designed to evaluate 5-V logic chips and is composed of two boards - one is the main board and the other is the daughter board. The main board includes a power supply and a reset circuit. The daughter board contains all of the necessary components for the evaluation board, such as crystal oscillator, reset switches, clock generation circuits, and other components. The main board also contains a query/programming port, which can be used to communicate between the main board and the daughter board, as well as for in-circuit programming.

The working principle of AC320004-5 is based on the serial communication between the main board and the daughter board adapted to the logic family. This communication is based on the Standard Mode (SM) protocol and is bidirectional. The Standard Mode protocol consists of one-byte table commands and a synchronization bit. The synchronization bit is used to indicate the beginning of a byte frame and consists of two bits, one of which is fixed at logic low, while the other bit changes from logic low to logic high every time a new byte is transmitted. The table command consists of the header byte, the address byte, a command byte, and a data byte.

The main board of AC320004-5 provides the functionality of controlling the performance of 5-V logic chips such as ALE (Address Latch Enable), RD (Read), NCE (Negated Chip Enable), and others. The ALE signal is used for transferring the address from the address bus to a latch and is usually generated at the beginning of each memory access. The RD signal is responsible for controlling thememory content by allowing the data to be read or written to the memory locations. The NCE signal is used to control when a chip is enabled or disabled to accept the memory accesses.

The daughter board of AC320004-5 provides the functionality of evaluation, simulation, programming and debugging the 5-V logic chips. It can be used to emulate the behavior of the target logic chips. The evaluation board provides testing capability for the target chips, such as test pattern generation and evaluation of the results. The board also provides programming facilities, such as in-circuit programming, which allows the memory contents of the target chip to be changed without needing to disconnect the board. Finally, the board also provides debugging facilities, which allow the engineer to observe the waveforms of the logic signals.

In conclusion, AC320004-5 is an Evaluation Board that is designed to evaluate 5-V logic chips. The main board provides the necessary power supply and programming port, while the daughter board provides all of the necessary evaluation, simulation, programming and debugging tools. This Evaluation Board is essential for verifying the performance of logic chips and ensuring their successful operation in the application.

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