MC68HC908LJ24 Datasheet, PDF (322/464 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Multi-Master IIC Interface (MMIIC)
MMAD[7:1] — Multi-Master 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.
MMEXTAD — Multi-Master Expanded Address
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.
1 = MMIIC responds to the following calling addresses:
$MMAD[7:1], 0000000, and 0001100.
0 = MMIIC responds to address $MMAD[7:1]
For example, when MMADR is configured as:
MMAD7 MMAD6 MMAD5 MMAD4 MMAD3 MMAD2 MMAD1 MMEXTAD
1
1
0
1
0
1
0
1
The MMIIC module will respond to the calling address:
Bit 7
6
5
4
3
2
Bit 1
1
1
0
1
0
1
0
or the general calling address:
0
0
0
0
0
0
0
or the calling address:
0
0
0
1
1
0
0
NOTE: bit-0 of the 8-bit calling address is the MMRW bit from the calling master.
Data Sheet
322
MC68HC908LJ24/LK24 — Rev. 2
Multi-Master IIC Interface (MMIIC)
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