MC912DG128A Motorola, MC912DG128A Datasheet - Page 341

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

15-dev
MOTOROLA
R/W — Read/Write Flag
TTAGO — Trace, Tag, Go Field
REGN — Register/Next Field
Indicates which register is being affected by a command. In the case of
a READ_NEXT or WRITE_NEXT command, index register X is
pre-incriminated by 2 and the word pointed to by X is then read or
written.
1 = Data follows the command
0 = Write
1 = Read
Development Support
REGN Value
Table 59 TTAGO Decoding
TTAGO Value
Table 60 REGN Decoding
000
001
010
011
100
101
110
111
00
01
10
11
READ/WRITE NEXT
Instruction
Instruction
TRACE1
TAGGO
PC
SP
GO
—
—
—
D
X
Y
MC68HC912DT128A Rev 2.0
Background Debug Mode
Development Support
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