mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 460

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

General Operation of External Master Transfers
Table 18-11 lists conditions that cause state transitions.
18-32
Current
Implicit
master
Reset
State
Table 18-11. Three-Wire Bus Arbitration Protocol Transition Conditions
Figure 18-32. Three-Wire Bus Arbitration Protocol State Diagram
Condition
Label
A2
A3
A4
B1
B2
B3
B4
A1
D1
Asserted
Negated
Negated
Negated
Negated
Negated
Negated
Negated
RSTI
External
Master
C3
C5
A3
Watchdog
Software
Asserted
Negated
Negated
Negated
Negated
Negated
Negated
Reset
—
MCF5407 User’s Manual
D2
D4
Asserted
Asserted
Asserted
Asserted
Negated
Negated
Explicit
Master
Reset
BG
—
—
B1
D3
A1
A2
C1
C2
C4
Asserted
Request
Negated
Bus
—
—
—
—
—
—
B2
B4
A4
Implicit
Master
Progress
Transfer
—
—
—
—
—
—
—
—
in
B3
Cycle
End of
—
—
—
—
—
—
—
—
1
Next State
External
Explicit
Explicit
Implicit
master
master
master
Implicit
master
master
device
Reset
Reset
EM