Product Description:

Input/output (I/O) interface circuits, also known as adapter, adapter card, or interface card, serve as the bridge for microcomputers to exchange information with external devices.

Interface circuit structure: Generally composed of a register group, dedicated storage, and control circuit, with the current control commands, communication data, and status information of external devices stored separately in the dedicated storage or register group.

(2) Interface Circuit Connection: All external devices are connected to the system bus of the microcomputer via their respective interface circuits.

(3) Communication Methods: Divided into parallel communication and serial communication. Parallel communication transmits data bits simultaneously; serial communication sequentially transmits data bit by bit.

Features Overview:

Constant current power supply for switches

2. Automatic power supply and bell switching

3. Automatic ring cut-off feature

4. Reverse Polarity Function

5. Harvester unloading equipment inspection

6. Secondary/tertiary line transformation

7. PCM Encoding and Decoding

8. Separate time slots for receiving and transmitting clocks.

9. Hands-free Transmission (Supports Call Display)

10. Programmable transient overvoltage protection

11. +5V and +48V power supply.

Actual product images:

Application:

Switches, dispatching machines, optical terminals, voice cards, wireless public phone systems, voice gateway systems, other loop terminals, etc.

Products are customizable.