Analog Devices ADSP-BF53x Blackfin Reference page 755

The address ranges stored in
and
WPIA5
<=
WPIA0
<=
WPIA2
<=
WPIA4
Two operations implement data watchpoints:
• The values in the two Data Watchpoint Address registers,
WPDA[1:0]
• Corresponding count values in the Data Watchpoint Address
Count registers,
The two Data Watchpoint Address registers may be further grouped
together into one data-address-range watchpoint,
The instruction and data count value registers must be loaded with the
number of times the watchpoint must match minus one. After the count
value reaches zero, the subsequent watchpoint match results in an excep-
tion or emulation event.
Note count values must be reinitialized after the event has
occurred.
An event can also be triggered on a combination of the instruction and
data watchpoints. If the
event is triggered only when both an instruction address watchpoint
matches and a data address watchpoint matches. If the
an event is triggered when any of the enabled watchpoints or watchpoint
ranges match.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
must satisfy these conditions:
WPIA1
WPIA3
WPIA5
, are compared to the address on the data buses.
WPDACNT[1:0]
bit in the
WPAND
, ,
WPIA0 WPIA1 WPIA2
, are decremented on each match.
WPDA[1
register is set, then an
WPIACTL
Debug
, , ,
WPIA3 WPIA4
: .
0]
bit is 0, then
WPAND
21-3