MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 338

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Multi-Master IIC Interface (MMIIC)
16.7 Program Algorithm
Data Sheet
338
When the MMIIC module detects an arbitration loss in master mode, it
releases both SDA and SCL lines immediately. But if there are no further
STOP conditions detected, the module will hang up. Therefore, it is
recommended to have time-out software to recover from this condition.
The software can start the time-out counter by looking at the MMBB (bus
busy) flag and reset the counter on the completion of one byte
transmission. If a time-out has occurred, software can clear the MMEN
bit (disable MMIIC module) to release the bus, and hence clear the
MMBB flag. This is the only way to clear the MMBB flag by software if
the module hangs up due to a no STOP condition received. The MMIIC
can resume operation again by setting the MMEN bit.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
MC68HC908AP Family — Rev. 2.5
MOTOROLA