mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 300

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Multi-Master IIC Interface (MMIIC)
Data Sheet
300
MMAD[7:1] — Multi-Master Address
MMEXTAD — Multi-Master Expanded Address
These seven bits represent the MMIIC interface’s own specific slave
address when in slave mode, and the calling address when in master
mode. Software must update MMAD[7:1] as the calling address while
entering master mode and restore its own slave address after master
mode is relinquished. This register is cleared as $A0 upon reset.
This bit is set to expand the address of the MMIIC in slave mode.
When set, the MMIIC will acknowledge the following addresses from
a calling master: $MMAD[7:1], 0000000, and 0001100.
Reset clears this bit.
For example, when MMADR is configured as:
The MMIIC module will respond to the calling address:
or the general calling address:
or the calling address:
Note that bit-0 of the 8-bit calling address is the MMRW bit from the
calling master.
1 = MMIIC responds to the following calling addresses:
0 = MMIIC responds to address $MMAD[7:1]
MMAD7 MMAD6 MMAD5 MMAD4 MMAD3 MMAD2 MMAD1 MMEXTAD
Bit 7
Bit 7
$MMAD[7:1], 0000000, and 0001100.
Multi-Master IIC Interface (MMIIC)
1
1
0
0
1
6
1
0
6
0
0
5
0
0
5
0
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
1
4
1
0
4
1
0
3
0
0
3
1
Freescale Semiconductor
1
2
1
0
2
0
Bit 1
Bit 1
0
0
0
0
1