TC1784
Data Access Overlay (OVC)
User´s Manual
6-21
V1.1, 2011-05
OVC, V1.19
DCINVAL
18
w
Data Cache Invalidate
No function in devices without without data cache in
Tricore.
0
B
No action
1
B
Data Cache Lines in DMI are invalidated
(flushed).
Note: Per write modified cache lines are not
invalidated.
1)
Return 0 if read.
OVCONF
24
rw
Overlay Configured
Overlay configured status bit
0
B
Overlay is not configured or it has been already
started by CPU
1
B
Overlay block control registers are configured
and ready for overlay start
This bit may be used as handshake bit between a
debug device (via JTAG interface and Cerberus) and
the CPU.
POVCONF
25
w
Protection Bit for OVCONF
0
B
Bit protection: Bit OVCONF remains unchanged
with register OCON write
1
B
OVCONF can be changed with actual write
access to register OCON
This bit enables OVCONF-write during OCON write.
Return 0 if read.
0
[23:19]
,
[31:26]
r
Reserved
Read/write 0.
1) Because the data cache is a writeback cache (not a writethrough cache; therefore saving of modified data in
cache has to be performed by the user) it is highly recommended to use only non-cached accesses for overlaid
(redirected) accesses to the target memory (normally the Program Flash), if write accesses are involved.
Field
Bits
Type Description
Содержание TC1784
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