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Bus Operation
MOTOROLA M68060 USER’S MANUAL 7-57
Figure 7-41. MC68040-Arbitration Protocol State Diagram
D
BB
BBI
QBR
BBO
BBO THREE-STATE
IBR
BCLK
AM
IMPLICIT
AM
EXPLICIT
SNOOP
IMPLICIT
OWN
F3
E4
E5
E6
F2
F1
E3
E2
E1
D5
D4
EXPLICIT
OWN
END
TENURE
RESET
A1
B1
B2
B3
B4
A3
A2
D3
D1
C1
C3
C2
IBR
BR
BBI
BBO
BB
BCLK
= INTERNAL BUS REQUEST SIGNAL
= EXTERNAL BUS REQUEST PIN
= INTERNAL BB SAMPLED AS INPUT
= BB DRIVEN INTERNALLY BY MC68060
= EXTERNAL BB PIN
= VIRTUAL BUS CLOCK DERIVED FROM CLK AND CLKEN
D6
D2
G1
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