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20.1.2
Block Diagram
Figure 20.1 shows a block diagram of the UBC.
BBRA:
Break bus cycle register A
BARA:
Break address register A
BASRA:
Break ASID register A
BAMRA: Break address mask register A
BBRB:
Break bus cycle register B
BARB:
Break address register B
BASRB:
Break ASID register B
BAMRB: Break address mask register B
BDRB:
Break data register B
BDMRB: Break data mask register B
BRCR:
Break control register
Rev. 4.0, 04/00, page 678 of 850
Access
Address
control
bus
Figure 20.1 Block Diagram of User Break Controller
Channel A
Access
BBRA
comparator
Address
BASRA
comparator
BAMRA
Channel B
Access
BBRB
comparator
Address
BASRB
comparator
BAMRB
Data
comparator
Control
BRCR
User break trap request
Data
bus
BARA
BARB
BDRB
BDMRB
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