20.1.2 Block Diagram
Figure 20.1 shows a block diagram of the UBC.
Access
control
Address
bus
Data
bus
Channel A
Access
comparator
BBRA
BARA
Address
comparator
BASRA
BAMRA
Channel B
Access
comparator
BBRB
BARB
Address
comparator
BASRB
BAMRB
BDRB
Data
comparator
BDMRB
BBRA:
BARA:
Break bus cycle register A
Break address register A
BASRA: Break ASID register A
BAMRA: Break address mask register A
BBRB:
BARB:
Break bus cycle register B
Break address register B
Control
BRCR
BASRB: Break ASID register B
BAMRB: Break address mask register B
BDRB:
BDMRB: Break data mask register B
BRCR: Break control register
Break data register B
User break trap request
Figure 20.1 Block Diagram of User Break Controller
Rev. 6.0, 07/02, page 774 of 986
RENESAS [ RENESAS TECHNOLOGY CORP ]
