ST16C550 Exar Corporation, ST16C550 Datasheet - Page 12

• Manufacturer Part Number: ST16C550
• Description: UART WITH 16-BYTE FIFO
• Manufacturer: Exar Corporation

ST16C550
Figure 4, INTERNAL LOOP-BACK MODE DIAGRAM
Rev. 4.30
-IO W ,IO W
-IO R ,IO R
C S 0 ,C S 1
-R X R D Y
-T X R D Y
R E S E T
D 0 -D 7
-D D IS
A 0 -A 2
-C S 2
IN T
-A S
B a u d R a te
G en erato r
T ra n sm it
R eg isters
R eg isters
12
R eceive
F IF O
F IF O
C lo ck
&
T ra n sm it
R eg ister
R eg ister
R eceive
S h ift
S h ift
VCC
VCC
VCC
VCC
VCC
T X
R X
-R T S
-D T R
-O P 1
-C T S
-D S R
-O P 2
-R I
-C D