MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 383

• Manufacturer Part Number: MPC564EVB
• Description: KIT EVAL FOR MPC561/562/563/564
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC564EVB

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC56x
• Data Bus Width: 32 bit
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MPC561, 562, 563, 564
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The MPC561/MPC563 samples the CR line at the rising edge of CLKOUT. When this signal is asserted,
the reservation flag is reset (negated).
The external bus interface (EBI) samples the logical value of the reservation flag prior to externally
starting a bus cycle initiated by the RCPU stwcx instruction. If the reservation flag is set, the EBI begins
with the bus cycle. If the reservation flag is reset, no bus cycle is initiated externally, and this situation is
reported to the RCPU.
The reservation protocol for a multi-level (local) bus is illustrated in
situation in which the reserved location is sited in the remote bus.
Freescale Semiconductor
lwarx
MPC500 Device
External Bus
CLKOUT
S
R
Interface
Q
MPC561/MPC563 Reference Manual, Rev. 1.2
Figure 9-30. Reservation on Local Bus
AT[0:3], RSV, R/W, TS
CR
External Bus
Reservation
Logic
ADDR[0:29]
Figure
9-31. The system describes the
CR
External Bus Interface
Master
Bus
9-43