CD2481 Datasheet, PDF (89/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

Programmable Four-Channel Communications Controller — CD2481
Figure 19. CD2481 Receive Character Processing
Character
Received
N
Error?
Y
FCErr ^Y
COR7[5]
ISTRIP ^Y
COR7[7]
N
LNE N
COR7[6]
Y
Y ^Previous
CHAR =
LNXT
N
Zero
Bit 7
SpISTRIP ^Y
COR 7
N
SCDE
Y
COR3[4]
Zero Bit 7
For Special
Char Match
Only
N
N _{CHAR =} Y
SCHR1/2
ESCDE ^Y
COR3[7]
N
N _{CHAR =} ^Y
SCHR3/4
A
B
Flow Control
Processing
Done
Exception
Interrupt
Done
Datasheet
89