MC912D60ACPVE8 Datasheet, PDF (391/460 Pages) Freescale Semiconductor, Inc – MC68HC912D60A MC68HC912D60C MC68HC912D60P Technical Data

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Background Debug Mode
DATA — Data Flag - Shows that data accompanies the command.
0 = No data
1 = Data follows the command
R/W — Read/Write Flag
0 = Write
1 = Read
BKGND — Hardware request to enter active background mode
0 = Not a hardware background command
1 = Hardware background command (INSTRUCTION = $90)
W/B — Word/Byte Transfer Flag
0 = Byte transfer
1 = Word transfer
BD/U — BDM Map/User Map Flag
Indicates whether BDM registers and ROM are mapped to addresses
$FF00 to $FFFF in the standard 64-Kbyte address space. Used only
by hardware read/write commands.
0 = BDM resources not in map
1 = BDM ROM and registers in map
Bit 7
6
5
4
3
2
1
Bit 0
H/F
DATA
R/W
TTAGO
REGN
INSTRUCTION — BDM Instruction Register (firmware command bit explanation)
$FF00
The bits in the BDM instruction register have the following meanings
when a firmware command is executed.
H/F — Hardware/Firmware Flag
0 = Firmware command
1 = Hardware command
DATA — Data Flag - Shows that data accompanies the command.
0 = No data
1 = Data follows the command
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
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Technical Data
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