CHAPTER 11 SERIAL INTERFACE FUNCTION
User’s Manual U15109EJ3V0UD
371
Figure 11-21. Block Diagram of I
2
Cn
IICEn
D Q
CLn1,
CLn0
SDAn
SCLn
INTIICn
LRELn WRELn SPIEn WTIMn ACKEn STTn SPTn
MSTSn ALDn EXCn COIn TRCn ACKDn STDn SPDn
fxx
STCFn IICBSYn STCENn IICRSVn
CLDn DADn SMCn DFCn CLn1 CLn0
CLXn
IICCEn1
Prescaler
IICCEn0
TMx output
Internal bus
Internal bus
IIC control register n
(IICCn)
IIC status register n (IICSn)
Set
Clear
Slave address
register n (SVAn)
Noise
eliminator
Match signal
IIC shift
register n (IICn)
SO latch
Start condition
generator
Data hold
time correction
circuit
Acknowledge
output circuit
Wakeup controller
N-ch open-drain
output
Acknowledge detector
Start condition
detector
Stop condition
detector
Serial clock counter
Interrupt request
signal generator
Noise
eliminator
Serial clock
controller
Serial clock
wait controller
Bus status
detector
IIC clock select
register n (IICCLn)
IIC function expansion
register n (IICXn)
IIC clock expansion
register n (IICCEn)
IIC flag register n
(IICFn)
N-ch open-drain
output
Remarks 1.
n = 0, 1
2.
TMx output
n = 0: TM5 output
n = 1: TM6 output