Data Address Watchpoints; Wpdan Registers - Analog Devices ADSP-BF53x Blackfin Reference

Watchpoint Unit

Data Address Watchpoints

Each data watchpoint is controlled by four bits in the
shown in Table
Table 21-6. Data Address Watchpoints
Bit Name
WPDACCn
WPDSRCn
WPDCNTENn
WPDAENn
When the two watchpoints are associated to form a range, two additional
bits are used. See
Table 21-7. WPDACTL Watchpoint Control Bits
Bit Name
WPDREN01
WPDRINV01
Note data address watchpoints always trigger emulation events.

WPDAn Registers

When the Watchpoint Unit is enabled, the values in the Data Watchpoint
Address registers (
Corresponding count values in the Data Watchpoint Address Count regis-
ters ( ) are decremented on each match.
WPDACNTn
21-10 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
21-6.
Description
Determines whether the match should be on a read or write access.
Determines which DAG the unit should monitor.
Enables the counter that counts the number of address matches. If the
counter is disabled, then every match causes an event.
Enables the data watchpoint activity.
Table 21-7.
Description
Indicates the two watchpoints associated to form a range.
Determines whether an event is caused by an address within the range identi-
fied or outside the range.
) are compared to the address on the data buses.
WPDAn
register, as
WPDACTL