MC96F6432
254
June 22, 2018 Ver. 2.9
9. This is the final step for master receiver function of I2C, handling STOP interrupt. The STOP bit
indicates that data transfer between master and slave is over. To clear USI1ST2, write
“0” to USI1ST2.
After this, I2C enters idle state.
The processes described above for master receiver operation of I2C can be depicted as the following figure.
Figure 11.95 Formats and States in the Master Receiver Mode (USI1)
From master to slave /
Master command or Data Write
From slave to master
0xxx
Value of Status Register
ACK
Interrupt
, SCL1 line is held low
Interrupt
after stop command
P
ACK
Arbitration lost as master and
addressed as slave
LOST&
Other master continues
Slave Receiver (0x1D)
or Transmitter (0x1F)
Master
Transmitter
SLA+R
ACK
DATA
Rs
LOST
LOST&
STOP
LOST
S or Sr
SLA+W
Y
N
0x0C
0x85
0x84
0x0C
ACK
STOP
Y
N
0x0D
0x1D
0x45
0x1F
0x44
LOST
P
0x20
P
0x20
Sr
0x44
Summary of Contents for MC96F6432 Series
Page 24: ...MC96F6432 24 June 22 2018 Ver 2 9 4 Package Diagram Figure 4 1 48 Pin LQFP 0707 Package...
Page 25: ...MC96F6432 June 22 2018 Ver 2 9 25 Figure 4 2 44 Pin MQFP Package...
Page 26: ...MC96F6432 26 June 22 2018 Ver 2 9 Figure 4 3 32 Pin LQFP Package...
Page 27: ...MC96F6432 June 22 2018 Ver 2 9 27 Figure 4 4 32 Pin SOP Package...
Page 28: ...MC96F6432 28 June 22 2018 Ver 2 9 Figure 4 5 28 Pin SOP Package...