XC800 Datasheet, PDF (16/132 Pages) Infineon Technologies AG – Microcontroller Family Architecture and Instruction Set

Field
PAGE
STNR
OP
0
XC800
Fundamental Structure
Bits Type Description
[2:0] rw
Page Bits
When written, the value indicates the new page.
When read, the value indicates the currently active
page.
[5:4] w
Storage Number
This number indicates which storage bit field is the
target of the operation defined by bit field OP.
If OP = 10_B,
the contents of PAGE are saved in STx before being
overwritten with the new value.
If OP = 11_B,
the contents of PAGE are overwritten by the
contents of STx. The value written to the bit positions
of PAGE is ignored.
[7:6] w
3r
00 ST0 is selected.
01 ST1 is selected.
10 ST2 is selected.
11 ST3 is selected.
Operation
0X Manual page mode. The value of STNR is
ignored and PAGE is directly written.
10 New page programming with automatic page
saving. The value written to the bit field PAGE
is stored. In parallel, the previous contents of
PAGE are saved in the storage bit field STx
indicated by STNR.
11 Automatic restore page action. The value
written to the bit field PAGE is ignored and
instead, PAGE is overwritten by the contents
of the storage bit field STx indicated by STNR.
Reserved
Returns 0 if read; should be written with 0.
User’s Manual, V 0.1
1-10
V 1.0, 2005-01