Datasheet

Rev.6.00 Oct.28.2004 page 25 of 1016
REJ09B0138-0600H
Stack Structure: In advanced mode, when the program counter (PC) is pushed onto the stack in a subroutine call, and the
PC, condition-code register (CCR), and extended control register (EXR) are pushed onto the stack in exception handling,
they are stored as shown in figure 2-2. When EXR is invalid, it is not pushed onto the stack. For details, see section 4,
Exception Handling.
(a) Subroutine Branch (b) Exception Handling
PC
(24 bits)
EXR
*1
Reserved
*1*3
CCR
PC
(24 bits)
SP
SP
Notes: 1.
2.
3.
When EXR is not used it is not stored on the stack.
SP when EXR is not used.
Ignored when returning.
(SP )
*2
Reserved
Figure 2-2 Stack Structure in Advanced Mode