MC68EC000EI16 Freescale Semiconductor, MC68EC000EI16 Datasheet - Page 24

• Manufacturer Part Number: MC68EC000EI16
• Description: IC MPU 32BIT 16MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI16

• Processor Type: M680x0 32-Bit
• Speed: 16MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

1.3.6.2 TRANSPARENT TRANSLATION/ACCESS CONTROL REGISTER FIELDS FOR
THE M68040. Figure 1-10 illustrates the MC68040 and MC68LC040 transparent
translation/ MC68EC040 access control register format.
MOTOROLA
Figure 1-10. MC68040 and MC68LC040 Transparent Translation/MC68EC040 Access
E—Enable
CI—Cache Inhibit
R/W—Read/Write
R/WM—Read/Write Mask
FC BASE—Function Code Base
FC MASK—Function Code Mask
Address Base
31
15
E
This 3-bit field defines the base function code for accesses to be transparently translated
This 3-bit field contains a mask for the FC BASE field. Setting a bit in this field causes
This 8-bit field is compared with address bits A31 – A24. Addresses that match in this
with this register. Addresses with function codes that match the FC BASE field (and are
otherwise eligible) are transparently translated.
the corresponding bit of the FC BASE field to be ignored.
comparison (and are otherwise eligible) are transparently translated/access controlled.
0 = Transparent translation/access control disabled
1 = Transparent translation/access control enabled
0 = Caching allowed
1 = Caching inhibited
0 = Only write accesses permitted
1 = Only read accesses permitted
0 = R/W field used
1 = R/W field ignored
14
S FIELD
13
ADDRESS BASE
12
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
11
0
10
0
Control Register Format
U1
9
U0
24
8
23
0
7
6
CM
5
ADDRESS MASK
0
4
0
3
W
2
Introduction
0
1
1-13
16
0
0