MC68HC912BD32 Datasheet, PDF (249/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
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Background Debug Mode
TTAGO — Trace, Tag, Go Field
Table 59 TTAGO Decoding
TTAGO Value
00
01
10
11
Instruction
—
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 60 REGN Decoding
REGN Value
000
001
010
011
100
101
110
111
Instruction
—
—
READ/WRITE NEXT
PC
D
X
Y
SP
15-dev
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MC68HC912BD32 Rev 1.0