MC68340 datasheet(214/441 Pages) FREESCALE

214 / 441 page

MOTOROLA

MC68340 USER’S MANUAL

5- 77

Result Data:

The contents of the selected register are returned as a long-word value. The data is

returned most significant word first.

5.6.2.8.5 Write A/D Register (WAREG/WDREG). The operand (long-word) data is written

to the specified address or data register. All 32 bits of the register are altered by the write.

Command Format:

98765432

001000001000

A/D

Command Sequence:

WDREG/WAREG

???

MS DATA

XXX

"ILLEGAL"

LS DATA

"NOT READY"

NEXT CMD

"NOT READY"

"CMD COMPLETE"

NEXT CMD

"NOT READY"

Operand Data:

Long-word data is written into the specified address or data register. The data is

supplied most significant word first.

Result Data:

Command complete status ($0FFFF) is returned when register write is complete.

5.6.2.8.6 Read System Register (RSREG). The specified system control register is read.

All registers that can be read in supervisor mode can be read in BDM. Several internal

temporary registers are also accessible.

Command Format:

9876543

001001001000

Command Sequence:

RSREG

???

XXX

MS RESULT

XXX

"ILLEGAL"

NEXT CMD

LS RESULT

NEXT CMD

"NOT READY"

Operand Data:

None

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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