MC68HC908BD48 Datasheet, PDF (182/290 Pages) Freescale Semiconductor, Inc – Microcontrollers

Multi-Master IIC Interface (MMIIC)
14.5.1 Multi-Master IIC Address Register (MMADR)
Address: $004B
Bit 7
6
5
4
3
2
1
Bit 0
Read:
MMAD7 MMAD6 MMAD5 MMAD4 MMAD3 MMAD2 MMAD1 MMEXTAD
Write:
Reset: 1
0
1
0
0
0
0
0
Figure 14-1. Multi-Master IIC Address Register (MMADR)
MMAD[7:1] — Multi-Master Address
These 7 bits can be the MMIIC interface’s own specific slave address
in slave mode or the calling address when in master mode. Reset sets
a default value of $A0.
MMEXTAD — Multi-Master Expanded Address
This bit is set to expand the calling address of the MMIIC in slave
mode. When set, the MMIIC will acknowledge the general call
address $00 and the matched 4-bit MSB address, MMAD[7:4].
For example, when MMAD[7:1] = $A1 and MMEXTAD = 1, the MMIIC
calling address is $A0, and it will acknowledge calling addresses $00
and $A0 to $AF.
Reset clears this bit.
1 = MMIIC calling address is $MMAD[7:4]0
MMIIC respond address is $00, and $MMAD[7:4]0 to
$MMAD[7:4]F
0 = MMIIC address id $MMAD[7:1]
Technical Data
182
Multi-Master IIC Interface (MMIIC)
MC68HC908BD48 — Rev. 1.0
MOTOROLA