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Chapter 12 Serial Interface 3
12-1-2 Block Diagram
Serial Interface 3 Block Diagram
Figure 12-1-1 Serial Interface 3 Block Diagram
SBO3/SDA/P51
SBI3/P50
SBT3/SCL/P52
M
U
X
SC3IOM
SBO3/SDA/P51
SC3IOM
SC3SBOS
SC3SBIS
SC3SBTS
SC3MST
-
SC3MD1
-
-
0
7
SC3IRQ
SWAP
SC3DIR
SC3CE1
SC3SBIS
Read/Write
3
SC3MD0
SC3LNG0
SC3LNG1
SC3LNG2
SC3STE
SC3DIR
-
SC3CE1
SC3BSY
0
7
ACK control circuit
Clock
control circuit
SC3TRB
Shift register
IRQ control circuit
BUSY
generation circuit
Transfer bit counter
Start condition
generation circuit
SC3STE
SC3CMD
sc3psc
(Prescaler output)
SC3STE
SC3SBTS
SC3SBOS
Start condition
detection circuit
M
U
X
IIC clcok
generation sircuit
POL
POL
7
SC3CTR
SC3ACKO
SC3ACKS
SC3CMD
SC3REX
-
SC3STC
IICBSY
0
-
M
U
X
SC3CE1