MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 594
![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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QADC64E Enhanced Mode Operation
Byte access to an even address of a QADC64E location is shown in the top illustration of
the case of write cycles, byte 1 of the register is not disturbed. In the case of a read cycle, the QADC64E
provides both byte 0 and byte 1.
Byte access to an odd address of a QADC64E location is shown in the center illustration of
In the case of write cycles, byte 0 of the register is not disturbed. In the case of read cycles, the QADC64E
provides both byte 0 and byte 1.
16-bit accesses to an even address read or write byte 0 and byte 1 as shown in the lowest illustration of
Figure
16-bit accesses to an odd address require two bus cycles; one byte of two different 16-bit QADC64E
locations is accessed. The first bus cycle is treated by the QADC64E as an 8-bit read or write of an odd
address. The second cycle is an 8-bit read or write of an even address. The QADC64E address space is
organized into 16-bit even address locations, so a 16-bit read or write of an odd address obtains or provides
the lower half of one QADC64E location, and the upper half of the following QADC64E location.
14-52
14-24. The full 16 bits of data is written to and read from the QADC64E location with each access.
Intermodule Bus
Intermodule Bus
Intermodule Bus
QADC Location
QADC Location
QADC Location
8-bit Access of an Odd Address (ISIZ = 01, A0 = 1; OR ISIZ = 10, A0 = 1)
MPC561/MPC563 Reference Manual, Rev. 1.2
Figure 14-24. Bus Cycle Accesses
8-bit Access of an Even Address (ISIZ = 01, A0 = 0)
W
W
W
16-Bit Aligned Access (ISIZ = 10, A0 = 0)
Byte 0
Byte 0
Byte 0
Byte 0
BYTE 0
BYTE 0
R
R
R
W
W
W
Byte 1
Byte 1
Byte 1
Byte 1
BYTE 1
BYTE 1
R
R
R
QADC64E Bus CYC ACC
Freescale Semiconductor
Figure
Figure
14-24. In
14-24.
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