AVR32AP datasheet(13/181 Pages) ATMEL

13 / 181 page

32001A–AVR32–06/06

AVR32

ished and the rets / rete instruction is encountered, the RSR associated with I is copied to SR,

and the execution continues in the original context C.

RSR_DBG - Return Status Register for Debug Mode

When Debug mode is entered, the status register contents of the original mode is automatically

saved in this register. When the debug routine is finished, the retd instruction copies the con-

tents of RSR_DBG into SR.

RAR_SUP, RAR_INT0, RAR_INT1, RAR_INT2, RAR_INT3, RAR_EX, RAR_NMI - Return

Address Registers

If a request for a mode change, for instance an interrupt request, is accepted when executing in

a context C, the re-entry address of context C is automatically stored in the Return Address Reg-

ister (RAR) associated with the interrupt context I. When the execution in the interrupt state I is

finished and the rets / rete instruction is encountered, a change-of-flow to the address in the

RAR associated with I, and the execution continues in the original context C.

RAR_DBG - Return Address Register for Debug Mode

When Debug mode is entered, the Program Counter contents of the original mode is automati-

cally saved in this register. When the debug routine is finished, the retd instruction copies the

contents of RAR_DBG into PC.

JECR - Java Exception Cause Register

This register contains information needed for Java traps. See Java Technical Reference Manual

for details.

JOSP - Java Operand Stack Pointer

This register holds the Java Operand Stack Pointer. See Java Technical Reference Manual for

details. The register is initialized to 0 at reset.

JAVA_LVx - Java Local Variable Registers

The Java Extension Module uses these registers to temporarily store local variables. See Java

Technical Reference Manual for details.

JTBA - Java Trap Base Address

This register contains the base address to the program code for the trapped Java instructions.

See Java Technical Reference Manual for details.

JBCR - Java Write Barrier Control Register

This register is used by the garbage collector in the Java Virtual Machine. See Java Technical

Reference Manual for details.

CONFIG0 / 1 - Configuration Register 0 / 1

Used to describe the processor, its configuration and capabilities. The contents and functionality

of these registers is described in detail in Section 2.6 on page 16.

COUNT - Cycle Counter Register

The COUNT register increments once every clock cycle, regardless of pipeline stalls and

flushes. The COUNT register can both be read and written. The count register can be used

together with the COMPARE register to create a timer with interrupt functionality. The COUNT

AVR32AP Datasheet(PDF) 13 Page - ATMEL Corporation