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Chapter 5 Serial Functions
93
Overview
Figure 5-1-1 Serial 0 Block Diagram
fs/2
fs/4
fs/16
BC3
×1/2
SBI0/RXD/P01
SBO0/TXD1/P00
SC0RXB
SC0TRB
SBT0/P02
SC0IRQ
Shift register
SWAP
Start condition
transmission
Receive buffer
SC0PEK
SC0FEF
–
SC0BSY
SC0CMD
–
SC0ORE
0
7
0
7
–
SC0SBTS
0
7
0
7
SC0SBIS
SC0SBOS
SC0SBTM
SC0SBOM
SC0IOM
–
–
SC0TRI
SC0BRKF
SC0CK0
SC0CKM
–
–
SC0CK1
SC0ERE
SC0LNG0
SC0MD0
SC0MD1
SC0MD3
SC0NPE
SC0PM0
SC0PM1
SC0FM0
SC0FM1
SC0BRKE
–
–
SC0MD2
SC0CTR
SC0LNG1
SC0LNG2
SC0STE
SC0DIR
SC0CE0
SC0CE1
–
M
U
X
M
U
X
M
U
X
Bit counter
3
2
Start condition
detection
Break
receive control
Stop bit
detection
Receive
control
parity check
Append
transmit
control parity
8
8
8
8
8
0
7
SBO0/P00
ORE detection
control
1/2 of timer 3
overflow
M
U
X