A bidirectional buffer, also known as a bidirectional transceiver, is a digital circuit that enables data transmission between two buses in both directions. This is achieved using control signals for enabling the buffer and determining the direction of data flow.
- Dual Data Flow: Allows data to be transferred from bus A to bus B and vice versa.
- Control Signals:
- Enable (EN): Activates the buffer for data transmission.
- Direction (DIR): Determines the direction of data flow. When DIR is low, data flows from A to B; when DIR is high, data flows from B to A.
- High-Impedance State: When the buffer is disabled (EN is low), both buses are in a high-impedance state, effectively disconnecting them.
- Bus Interface: Used in bus systems to control data flow between different parts of a circuit.
- Memory Access: Enables data exchange between a CPU and memory.
- Communication Systems: Facilitates bidirectional communication in systems where two devices need to send and receive data.
