mpc604e Freescale Semiconductor, Inc, mpc604e Datasheet - Page 18

• Manufacturer Part Number: mpc604e
• Description: Powerpc 604e-tm Risc Microprocessor Technical Summary
• Manufacturer: Freescale Semiconductor, Inc

1.2.12 Clocking
The 604e has a phase-locked loop (PLL) that generates the internal processor clock. The input, or reference
signal, to the PLL is the bus clock. The feedback in the PLL guarantees that the processor clock is phase
locked to the bus clock, regardless of process variations, temperature changes, or parasitic capacitances. The
PLL also ensures a 50% duty cycle for the processor clock.
ADDRESS
TRANSFER
TRANSFER
ATTRIBUTE
ADDRESS
TERMINATION
18
ADDRESS
ARBITRATION
ADDRESS
START
EXTENDED TRANSFER START
BUS REQUEST
BUS GRANT
ADDRESS BUS BUSY
TRANSFER START
ADDRESS
ADDRESS PARITY
ADDRESS PARITY ERROR
TRANSFER TYPE
TRANSFER CODE
TRANSFER SIZE
TRANSFER BURST
CACHE INHIBIT
WRITE THROUGH
GLOBAL
CACHE SET MEMBER
ADDRESS ACKNOWLEDGE
ADDRESS RETRY
SHARED
Figure 5. PowerPC 604e Microprocessor Signal Groups
PowerPC 604e RISC Microprocessor Technical Summary
5
3
3
1
1
1
1
2
1
1
1
1
1
1
1
1
32
4
1
64
1
1
1
1
1
1
1
4
1
1
1
8
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
1
DATA BUS GRANT
DATA BUS WRITE ONLY
DATA BUS BUSY
TEST ACCESS PORT
DATA
DATA PARITY
DATA PARITY ERROR
DATA BUS DISABLE
SYSTEM RESET
SYSTEM MANAGEMENT
TEST DATA OUT
TRANSFER ERROR ACK
MACHINE CHECK_
CHECKSTOP INPUT_
CLOCK OUT
TRANSFER ACKNOWLEDGE
DATA RETRY
INTERRUPT
CHECKSTOP_OUTPUT_
SYSTEM CLOCK
RESERVATION
HARD RESET
DRIVER MODE
L2_INT
HALTED
RUN
ENABLE TIMEBASE
PLL CONFIG
ANALOG VDD
TOTAL: 171
DATA
DATA
ARBITRATION
DATA
TRANSFER
TERMINATION
INTERRUPT
SIGNALS
STATE
PROCESSOR
JTAG / COP
CLOCK
MISC