Rainbow Electronics AT89C5122 - Manual (Page 76)

76
AT8xC5122/23
4202E–SCR–06/06
Figure 43. CharacterTransmission Diagram
SCIBUF
Transmitted
Character
Shift Register
I/O pin
SCTBE SCTC
SCISR register
SCTBI SCTI
SCIIR register
ESCTBI
ESCTI
S
C
IE
R
R
egist
er
Parity error
SCPE
SCPI
Parity error