What is AHB and AMBA?

What is AHB and AMBA?

Both Advanced Peripheral Bus (APB) and Advanced High-performance Bus (AHB) are part of Advanced Microcontroller Bus Architecture (AMBA) which is a set of interconnect specifications from ARM that sets protocols for effective on-chip communication between IPs and thereby ensuring high-performance SOC Design.

What is AMBA protocol?

The Advanced Microcontroller Bus Architecture, or AMBA, is an open-standard, on-chip interconnect specification for the connection and management of functional blocks in system-on-a-chip (SoC) designs. Essentially, AMBA protocols define how functional blocks communicate with each other.

What is APB bus used for?

APB : The Advanced Peripheral Bus (APB) is used for connecting low bandwidth peripherals. It is a simple non-pipelined protocol that can be used to communicate(read or write) from a bridge/master to a number of slaves through the shared bus.

Why is AMBA used?

Where is AMBA used? AMBA simplifies the development of designs with multiple processors and large numbers of controllers and peripherals. However, the scope of AMBA has increased over time, going far beyond just microcontroller devices. Today, AMBA is widely used in a range of ASIC and SoC parts.

Where is AMBA protocol used?

The AMBA AHB (Advanced High-performance Bus) specification defines an interface protocol most widely used with Cortex-M processors, for embedded designs and other low latency SoCs.

What is AMBA in VLSI?

AMBA (Advanced Microcontroller Bus Architecture) is a freely-available, open standard for interconnection and management of IP cores in a System-on-Chip (SoC) IC. It allows right-first-time development of multi-processor chip designs in a modular, reusable, and scalable manner.

Why AMBA APB is used?

The Advanced Peripheral Bus (APB) is part of the Advanced Microcontroller Bus Architecture (AMBA) protocol family. It defines a low-cost interface that is optimized for minimal power consumption and reduced interface complexity.

What are the signals used during bus transactions in AMBA architecture?

The signals shown are the address signal (HADDR), the write data bus (HWDATA), and the read data bus (HRDATA). The address is used for slave selection, the write data bus is used to move data from master to slave, and the read data bus is for moving data between slave and master.

What is AXI and APB?

The AXI (Advanced eXtensible Interface) to APB (Advanced Peripheral Bus) Bridge translates AXI4-Lite transactions into APB transactions. It functions as a slave on the AXI4-Lite interface and as a master on the APB interface. The AXI to APB Bridge main use model is to connect the APB slaves with AXI masters.

What is the role of Bsize signal in AMBA bus?

The BWRITE signal indicates the transfer direction (read or write), and BSIZE\\[\\] specifies the transfer size (width). The slaves don’t have to check the bus addresses to see if they’re being addressed. Instead, the bus address is used to generate a select signal (DSELx) to select the addressed slave bus unit.

What is a bus matrix used for?

In a power system, Bus Admittance Matrix represents the nodal admittances of the various buses. With the help of the transmission line, each bus is connected to the various other buses. Admittance matrix is used to analyse the data that is needed in the load or a power flow study of the buses.

What is the use of the AMBA interface?

Advanced Microcontroller Bus Architecture (AMBA) is a freely available, open standard for the connection and management of functional blocks in a System-on-Chip (SoC). The architecture facilitates right-first-time development of multi-processor designs, with large numbers of controllers and peripherals.

What are the different types of buses in power system?

Buses are of 3 types and are classified as:

  • PQ bus – the real power |P| and reactive power |Q| are specified. It is also known as Load Bus.
  • PV bus – the real power |P| and the voltage magnitude |V| are specified. It is also known as Generator Bus.
  • Slack bus – to balance the active and reactive power in the system.