mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 370

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Development Support
INSTRUCTION — BDM Instruction Register (firmware command bit explanation)
Technical Data
370
Bit 7
H/F
DATA
6
W/B — Word/Byte Transfer Flag
BD/U — BDM Map/User Map Flag
The bits in the BDM instruction register have the following meanings
when a firmware command is executed.
H/F — Hardware/Firmware Flag
DATA — Data Flag - Shows that data accompanies the command.
R/W — Read/Write Flag
Freescale Semiconductor, Inc.
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.
For More Information On This Product,
0 = Byte transfer
1 = Word transfer
0 = BDM resources not in map
1 = BDM ROM and registers in map
0 = Firmware command
1 = Hardware command
0 = No data
1 = Data follows the command
0 = Write
1 = Read
R/W
5
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Development Support
4
TTAGO
3
2
MC68HC912DG128 — Rev 3.0
REGN
1
Bit 0
MOTOROLA
$FF00