MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 1102
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MPC561MZP56
Manufacturer Part Number
MPC561MZP56
Description
Manufacturer
Freescale
Datasheet
1.MPC561MZP56.pdf
(1420 pages)
Specifications of MPC561MZP56
Cpu Family
MPC56x
Device Core
PowerPC
Device Core Size
32b
Frequency (max)
56MHz
Interface Type
QSPI/SCI/SPI/UART
Total Internal Ram Size
32KB
# I/os (max)
56
Number Of Timers - General Purpose
22
Operating Supply Voltage (typ)
2.6/5V
Operating Supply Voltage (max)
2.7/5.25V
Operating Supply Voltage (min)
2.5/4.75V
On-chip Adc
2(32-chx10-bit)
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
388
Package Type
BGA
Program Memory Type
ROMLess
Program Memory Size
Not Required
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MPC561MZP56
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MPC561MZP56R2
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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MPC562/MPC564 Compression Features
A.2.14
The MPC562/MPC564 allows the option to switch between compressed and non-compressed code on the
fly. There are two ways to switch between the modes, as shown in
Definition for Exception
A.2.14.1
The MPC562/MPC564 can wake up upon reset with all the exception handlers defined to be compressed
(or not), so when any exception occurs or completes, the hardware switches to the appropriate mode
without software intervention.
A.2.14.2
If the compression mode is enabled on the MPC562/MPC564, the software can switch between
compressed and non-compressed code by setting (or clearing) the compression mode bit in the RCPU
MSR register. This is done by setting/clearing bit 29 in the RCPU SRR1 register (SRR1 gets loaded into
the MSR register when the rfi instruction is executed. Bit 29 is the DCMPEN bit of the MSR). The next
step is to load SRR0 with a target address in compressed/non-compressed format and then executing an rfi
instruction. Following is a suggested routine to execute the switch in both directions (must be run in
supervisor mode when RCPU MSR[PR] bit is cleared):
A.3
A.3.1
The MPC562/MPC564 provides two instruction fetch modes: decompression off and decompression on.
The operational modes are defined by RCPU MSR[DCMPEN] bit. If the bit is set, the mode is
decompression on. Otherwise, it is in decompression off.
A-14
# R30 contains destination address in appropriate format
.set turn_on_compression_bit_mask, 4
.set turn_off_compression_bit_mask, 0xfffb
mfmsr
# to go to compressed code
ori
# or alternative to go to uncompressed code:
andi.
mtspr
mtspr
mtspr
rfi
Operation Modes
Compression/Non-Compression Mode Switch
Instruction Fetch
Compression Definition for Exception Handlers
Running Mixed Code
When BBCMCR[EN_COMP] (bit 21) is set, modification of
MSR[DCMPEN] (bit 29) by mtmsr instruction is strictly forbidden. It may
cause the machine to hang until reset.
r31
r31,r31,turn_on_compression_bit_mask
r31,r31,turn_off_compression_bit_mask
NRI,r0 # Disable external interrupts
SRR1,r31
SRR0,r30 # destination address load
# branch and modify MSR
Handlers,” and
MPC561/MPC563 Reference Manual, Rev. 1.2
Section A.2.14.2, “Running Mixed
NOTE
Section A.2.14.1, “Compression
Code.”
Freescale Semiconductor
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