mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 652

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Debug Support
)
Likewise, the following BDM sequence is needed to write an accumulator register:
BdmWriteACCn (
)
Additionally, it is required that writes to the accumulator extension registers be performed after the
corresponding accumulators are updated. This is needed since a write to any accumulator alters the
contents of the corresponding extension register.
For more information on saving and restoring the complete EMAC programming model, see
Section 3.3.1.2, “Saving and Restoring the EMAC Programming
30.5.3.3.10 Write Control Register (
The operand (longword) data is written to the specified control register. The write alters all 32 register bits.
Command/Result Formats:
30-34
rcreg
wcreg
rcreg
wcreg
wcreg
wcreg
Command
Result
accn;
#saved_data,macsr;// restore the original macsr
macsr;
#0,macsr;
#data,accn;
#saved_data,macsr;// restore the original macsr
15
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
0x2
0x0
0x0
Figure 30-35.
12
// read the desired accumulator
// read macsr contents & save
// disable all rounding modes
// write the desired accumulator
11
WCREG
WCREG
0x8
0x0
)
Command/Result Formats
D[31:16]
8
D[15:0]
7
Model”.
0x8
0x0
Rc
4
3
Freescale Semiconductor
0x0
0x0
0