MC68EC040RC25 Freescale Semiconductor, MC68EC040RC25 Datasheet - Page 108

• Manufacturer Part Number: MC68EC040RC25
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC040RC25

• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 25MHz
• Instruction Set Architecture: RISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 179
• Package Type: PGA
• Lead Free Status / Rohs Status: Supplier Unconfirmed

5.3.2 Transfer Modifier (TM2–TM0)
These three-state outputs provide supplemental information for each transfer type. Table
5-3 lists the encoding for normal and MOVE16 transfers, and Table 5-4 lists the encoding
for alternate access transfers. For interrupt acknowledge transfers, the TMx signals carry
the interrupt level being acknowledged; for breakpoint acknowledge transfers and
LPSTOP broadcast cycles on the MC68040V and MC68EC040V, the TMx signals are low.
When the M68040 is not the bus master, the TMx signals are set to a high-impedance
state.
5.3.3 Transfer Line Number (TLN1, TLN0)
These three-state outputs indicate which line in the set of four data cache lines is being
accessed for normal push and line data read accesses. TLNx signals are undefined for all
other accesses to instruction space and are placed in a high-impedance state when the
processor relinquishes the bus.
5-6
* MOVE16 accesses use only these encodings.
TM2
TM2
0
0
0
0
1
1
1
1
Table 5-4. Alternate Access Transfer Modifier Encoding
0
0
0
0
1
1
1
1
TM1
TM1
Table 5-3. Normal and MOVE16 Access
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Freescale Semiconductor, Inc.
For More Information On This Product,
Transfer Modifier Encoding
TM0
TM0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
M68040 USER’S MANUAL
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Data Cache Push Access
User Data Access*
User Code Access
MMU Table Search Data Access
MMU Table Search Code Access
Supervisor Data Access*
Supervisor Code Access
Reserved
Logical Function Code 0
Reserved
Reserved
Logical Function Code 3
Logical Function Code 4
Reserved
Reserved
Logical Function Code 7
Transfer Modifier
Transfer Modifier
MOTOROLA