MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 114

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

Specifications of MCF5272VF66

• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

Local Memory
4.5.3
Three supervisor registers define the operation of the instruction cache and local bus controller: the cache
control register (CACR) and two access control registers (ACR0, ACR1).
map of the CACR and ACRs. These registers have the following characteristics:
4.5.3.1
The CACR controls operation of the instruction cache. It provides a set of default memory access attributes
for when a reference address does not map into spaces defined by the ACRs. The supervisor-level CACR
is accessed in the CPU address space using the MOVEC instruction with an Rc encoding of 0x002. The
CACR can be read or written when the processor is in background debug mode (BDM).
4-12
•
•
•
•
Reset
Reset
Field CENB
Field
R/W
R/W
Rc
The CACR and ACRs can be accessed only in supervisor mode using the MOVEC instruction with
an Rc value of 0x002 (CACR), 0x004 (ACR0), and 0x005 (ACR1).
Addresses not assigned to the registers and undefined register bits are reserved for future
expansion. Write accesses to these reserved address spaces and reserved register bits have no
effect; read accesses return zeros.
The reset value column indicates the initial value of the register at reset. Uninitialized fields may
contain random values after reset.
The access column indicates whether the corresponding register can be read, written or both.
Attempts to read a write-only register cause zeros to be returned. Attempts to write to a read-only
register are ignored.
31
15
Instruction Cache Programming Model
Cache Control Register (CACR)
Address (using MOVEC) Name Width
30
—
MCF5272 ColdFire
—
29
0x002
0x004
0x005
Table 4-7. Memory Map of Instruction Cache Registers
CDPI CFRZ
28
Figure 4-4. Cache Control Register (CACR)
27
®
CEIB DCM DBWE
CACR
Integrated Microprocessor User’s Manual, Rev. 3
ACR0
ACR1
26
10
Write (R/W by debug module)
Write (R/W by debug module)
—
0000_0000_0000_0000
0000_0000_0000_0000
25
9
32
32
32
CINVA
24
8
0x002
Cache control register
Access control register 0
Access control register 1
23
7
Description
—
6
DWP
5
Table 4-7
4
Reset Value
—
0x0000
0x0000
0x0000
—
Freescale Semiconductor
shows the memory
2
1
CLNF
16
0