MC97F2664
April 11, 2014 Ver. 1.4
213
USInCR4 (USI0/1 Control Register 4: For I2C mode) : 101BH/102BH (XSFR), n = 0, 1
7
6
5
4
3
2
1
0
IICnIFR
–
TXDLYENBn
IICnIE
ACKnEN
IMASTERn
STOPCn
STARTCn
R
–
R/W
R/W
R/W
R
R/W
R/W
Initial value : 00H
IICnIFR
This is an interrupt flag bit for I2C mode. When an interrupt occurs, this
bit becomes
‘1’. This bit is cleared when write any values in th USInST2.
Writing “1” has no effect.
0
I2C interrupt no generation
1
I2C interrupt generation
TXDLYENBn
USInSDHR register control bit
0
Enable USInSDHR register
1
Disable USInSDHR register
IICnIE
Interrupt Enable bit for I2C mode
0
Interrupt from I2C is inhibited (use polling)
1
Enable interrupt for I2C
ACKnEN
Controls ACK signal Generation at ninth SCL period.
0
No ACK signal is generated (SDA =1)
1
ACK signal is generated (SDA =0)
NOTES) ACK signal is output (SDA =0) for the following 3 cases.
1. When received address packet equals to USInSLA bits in USInSAR.
2. When received address packet equals to value 0x00 with GCALLn
enabled.
3. When I2C operates as a receiver (master or slave)
IMASTERn
Represent operating mode of I2C
0
I2C is in slave mode
1
I2C is in master mode
STOPCn
When I2C is master, STOP condition generation
0
No effect
1
STOP condition is to be generated
STARTCn
When I2C is master, START condition generation
0
No effect
1
START or repeated START condition is to be generated
Содержание MC97F2664
Страница 20: ...MC97F2664 20 April 11 2014 Ver 1 4 4 Package Diagram Figure 4 1 64 Pin LQFP 1010 Package...
Страница 21: ...MC97F2664 April 11 2014 Ver 1 4 21 Figure 4 2 64 Pin LQFP 1414 Package...
Страница 22: ...MC97F2664 22 April 11 2014 Ver 1 4 Figure 4 3 64 Pin QFN Package...
Страница 23: ...MC97F2664 April 11 2014 Ver 1 4 23 Figure 4 4 44 Pin MQFP 1010 Package...