mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1073

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Development Capabilities and Interface
The four load/store data events, combined with the match events of the load/store address
comparators and the instruction watchpoints, are used to generate the load/store
watchpoints and breakpoint according to your programming.
When programming the load/store watchpoints to ignore L-address and L-data events, the
instruction must be a load/store instruction to trigger the load/store watchpoint event.
20.3.2.3 COUNTER SUPPORT. There are two 16-bit down counters that count one of the
instruction watchpoints or one of the load/store watchpoints. Both generate the
corresponding breakpoint when they reach zero. When working in masked mode, the
counters do not count detected watchpoints when MSR
predictable if they are counting watchpoints programmed on the instructions that alter the
counters. Readings from the active counters must be synchronized by inserting a sync
instruction before a read is performed. For details, refer to Section 20.3.1.2 Byte And Half-
Word Working Modes.
NOTE:
NAME
EVENT NAME
LW0
LW1
(G & H)
(G | H)
G
H
& denotes a logical AND, but | denotes a logical OR.
First Load/Store
DESCRIPTION
Second Load/
Watchpoint
Watchpoint
Table 20-6. Load/Store Watchpoints Programming Options
Store
(Gmatch0 | Gmatch1 | Gmatch2 | Gmatch3)
(Hmatch0 | Hmatch1 | Hmatch2 | Hmatch3)
((Gmatch0 & Hmatch0) | (Gmatch1 & Hmatch1) | (Gmatch2 & Hmatch2) | (Gmatch3 & Hmatch3))
((Gmatch0 | Hmatch0) | (Gmatch1 | Hmatch1) | (Gmatch2 | Hmatch2) | (Gmatch3 | Hmatch3))
Freescale Semiconductor, Inc.
Ignore I-address events
Ignore I-address events
For More Information On This Product,
I-ADDRESS EVENT
IW0, IW1, IW2, IW3,
IW0, IW1, IW2, IW3,
Table 20-5. Load/Store Data Events
PROGRAMMING
OPTIONS
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
EVENT FUNCTION
Ignore L-address events
Ignore L-address events
L-ADDRESS EVENT
Comparators (E & F)
Comparators (E & F)
Comparators (E | F)
Comparators (E | F)
PROGRAMMING
Comparator E
Comparator F
Comparator E
Comparator F
OPTIONS
RI
=0. Counter values are not
Comparators (G & H)
Comparators (G & H)
Ignore L-data Events
Ignore L-data Events
Comparators (G | H)
Comparators (G | H)
PROGRAMMING
L-DATA EVENT
Comparator G
Comparator G
Comparator H
Comparator H
OPTIONS
MOTOROLA