UCB-6

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Universal Controller Bus (UCB) is a high-performance peripheral interfacing system for controlling input/output (I/O) hardware. It has been widely adopted for both embedded and network-connected systems due to its high speed and flexibility. This tutorial provides an overview of UCB-6, its application field and working principle.

What is UCB-6?

UCB-6 is a synchronous bus developed by Siemens for high-speed peripheral interfacing. It is based on the earlier Universal Controller Bus (UCB) standard and has the same maximum data rate of 12.5+MB/s as the UCB but adds a number of enhancements in terms of reliability, scalability and flexibility. The UCB-6 standard defines three types of buses: the Basic Bus, the Extension Bus and the Power Bus. The Basic Bus consists of two 12-bit address lines, a 16-bit data bus and three control lines for controlling data transfers and addressing. The Extension Bus allows up to 16 additional address lines to be added and the Power Bus provides power to connected peripherals.

Application Field

UCB-6 is mainly used in embedded systems where high-speed data transfers and control of I/O hardware is required. It is also used in computers, particularly in high-end networking and storage applications. The combination of its high data transfer rate and reliability make it a popular choice for these types of systems.

Working Principle

The UCB-6 bus works on a master-slave basis. The master is usually a processor or system controller, and provides timing signals to all connected slaves. The slaves then respond to the master’s bus transactions by transferring data or performing some other action. This is done by the slaves decoding the master’s address and determining if the master wants to read a register or write a register. The master will then send the appropriate data or control signals to the slaves.

The UCB-6 bus provides a convenient way to control multiple I/O peripherals. Each I/O peripheral has a unique address and can be configured to respond to specific commands and data transfers. The master processor will control these devices by broadcasting address and control signals to all connected slaves. The slaves will then take appropriate action based on the decoded address. The UCB-6 bus can also be used to coordinate data transfers between connected peripherals.

The UCB-6 bus is also capable of automatic error detection and correction. All data transfers are checked for errors using cyclic redundancy checks (CRCs) and any errors detected are automatically corrected. This ensures reliability and robustness of the system.

Conclusion

UCB-6 is a high-performance, reliable and efficient peripheral interfacing system. It has been widely adopted in both embedded and network-connected systems due to its high speed and flexibility. It works on a master-slave basis and provides a convenient way to control multiple I/O peripherals. It also provides features such as automatic error detection and correction which enhances reliability and robustness of the system.

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