MC68HC912DG128 Datasheet, PDF (371/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
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Background Debug Mode
TTAGO — Trace, Tag, Go Field
Table 18-5. TTAGO Decoding
Table 18-6TTAGO Value
00
01
10
11
Table 18-7Instruction
—
GO
TRACE1
TAGGO
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.
Table 18-8. REGN Decoding
REGN Value
000
001
010
011
100
101
110
111
Instruction
—
—
READ/WRITE NEXT
PC
D
X
Y
SP
MC68HC912DG128 — Rev 3.0
MOTOROLA
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Technical Data
371