MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 375
![KIT EVAL FOR MPC561/562/563/564](/photos/39/39/393946/mpc564evbimage_sml.jpg)
MPC564EVB
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
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9.5.7.4
The MPC561/MPC563 can be configured at system reset to use the internal bus arbiter. In this case, the
MPC561/MPC563 will be parked on the bus. The parking feature allows the MPC561/MPC563 to skip the
bus request phase, and if BB is negated, assert BB and initiate the transaction without waiting for BG from
the arbiter.
The priority of the external device relative to the internal MPC561/MPC563 bus masters is programmed
in the SIU module configuration register. If the external device requests the bus and the MPC561/MPC563
does not require it, or if the external device has higher priority than the current internal bus master, the
MPC561/MPC563 grants the bus to the external device.
Table 9-4
Freescale Semiconductor
CLKOUT
BR0
BG0
BR1
BG1
BB
and Attributes
TS
TA
ADDR[8:31]
describes the priority mechanism used by the internal arbiter.
Internal Bus Arbiter
Figure 9-26. Bus Arbitration Timing Diagram
MPC561/MPC563 Reference Manual, Rev. 1.2
“Turns On” and
Drives Signals
Master 0
(Three-state Controls)
and “Turns Off”
Negates BB
Master 0
“Turns On” and
Drives Signals
Master 1
External Bus Interface
9-35
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