What is CoreSight arm?

The CoreSight architecture defines a set of capabilities that can be designed into a processor or system level components. The system level capabilities allow a debugging component to access and use the processor debug and trace capabilities. Arm has developed a set of components that are based on this architecture.

What is serial wire debug?

Serial Wire Debug (SWD) is a 2-pin (SWDIO/SWCLK) electrical alternative JTAG interface that has the same JTAG protocol on top. SWD uses an ARM CPU standard bi-directional wire protocol, defined in the ARM Debug Interface v5.

What are CoreSight components?

The CoreSight control and access components are: the Debug Access Port (DAP) the Embedded Cross Trigger (ECT) that includes the Cross Trigger Matrix (CTM) and the Cross Trigger Interface (CTI)….Internal system access using:

  • AHB-AP.
  • APB-AP.
  • JTAG-AP.
  • AHB-AP for Cortex-M3, if present.

What is ROM table?

The ROM table is just a simple look-up table and contains a few entries of address information, and a few ID registers to allow the debugger to identify it as a ROM table device. In typical Cortex-M3 or Cortex-M4 systems, the ROM table is located in address 0xE00FF000.

What is cross trigger interface?

The CTI combines and maps the trigger requests, and broadcasts them to all other interfaces on the ECT sub-system. When the CTI receives a trigger request it maps this onto a trigger output. This enables the ETM subsystems to cross trigger with each other.

Which register of pin connect block is used for configuring debug trace pins?

The trace clock is configured on pin P2. 6. PINSEL10. 3 enables the trace functions for all trace pins P2.

How do you program a ROM chip?

A ROM device cannot be programmed by a user. Such devices are mask-programmed by the manufacturer and you have to buy a large amount of them (>10k.. 100k). In this case you have to send the manufacturer a HEX-file with the content you wish to have inside your ROM.

Where the data is stored in ROM?

Read-Only Memory (ROM) is the primary memory unit of any computer system along with the Random Access Memory (RAM), but unlike RAM, in ROM, the binary information is stored permanently . Now, this information to be stored is provided by the designer and is then stored inside the ROM .

What is JTAG debugging?

JTAG is more than debugging and programming Processors often use JTAG to provide access to their debug/emulation functions and all FPGAs and CPLDs use JTAG to provide access to their programming functions. JTAG is not JUST a technology for processor debug/emulation.