MC68030CRC33C Freescale Semiconductor, MC68030CRC33C Datasheet - Page 181
MC68030CRC33C
Manufacturer Part Number
MC68030CRC33C
Description
IC MPU 32BIT ENHANCED 128-PGA
Manufacturer
Freescale Semiconductor
Specifications of MC68030CRC33C
Processor Type
M680x0 32-Bit
Speed
33MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
128-PGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
33MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
5V
Operating Supply Voltage (max)
5.25V
Operating Supply Voltage (min)
4.75V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
128
Package Type
PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
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7
7-20
i
D31
I,
31
the instruction cache, if possible, although the second one is the required
Figure 7-14. Example of Misaligned Cachable Word Transfer from Word Bus
Table 7-6 shows that the processor always prefetches instructions by reading
the processor attempts to fetch the entire 32 bits and loads both words into
word. Even if the instruction access is not cached, the entire 32 bits are latched
a long word from a long-word address (A1 :A0=00), regardless of port size
or alignment. When the required instruction begins at an odd-word boundary,
into an internal cache holding register from which the two instructions words
can subsequently be referenced. Refer to SECTION 11 INSTRUCTION EXE-
CUTION TIMING for a complete description of the cache holding register and
pipeline operation.
031
I
15
OPO
WORD OPERAND (REGISTER) 0
MSB
MSB
Figure 7-15. Misaligned Long-Word Transfer to Long-Word Port
WORD MEMORY
J
DATA BUS
f
OP1
LONG WORD OPERAND
LONG WORD MEMORY
UMB
LSB
DATA BUS
l
D16
I
LMB
0~2
MC68030 USER'S MANUAL
SIZ1
0
1
I
LSB
31
SIZO
0P3
1
O
MC68030
P,
A2
0
DO
0
I
I
0
A1
SIZ1
L
0
1
1
0
AO
SIZO
0P2
O
0
1
MC68030
CACHE ENTRY
1
A2
0
DSACK1 OSACKO
MEMORYCONTROL
1
L
L
A1
1
m m
0
AO
H
1
H
0
OSACK1
MEMORY CONTROL
MOTOROLA
L
L
DSACKO
L
L
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