Datasheet

TL16C451, TL16C452
ASYNCHRONOUS COMMUNICATIONS ELEMENTS
SLLS053C – MAY 1989 – REVISED AUGUST 1999
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL16C451 functional block diagram
Parallel
Port
8
CTS0
DSR0
RLSD0
RI0
SIN0
CS0
DB0–DB7
RTS0
DTR0
SOUT0
INT0
A0–A2
IOW
IOR
RESET
CLK
ERROR
SLCT
BUSY
PE
ACK
LPTOE
CS2
BDO
PD0–PD7
INIT
AFD
STB
SLIN
INT2
TL16C451
ACE
1
8
8
3
8
Parallel
Port
Select
and
Control
Logic
28
31
29
30
41
32
14 – 21
35 – 33
36
37
39
4
63
65
66
67
68
1
38
24
25
26
45
44
53 – 46
57
56
55
58
59
TL16C452 functional block diagram
8
TL16C452
CTS0
DSR0
RLSD0
RI0
SIN0
CS0
DB0–DB7
A0–A2
IOW
IOR
RESET
CLK
CTS1
DSR1
RLSD1
RI1
SIN1
CS1
ERROR
SLCT
BUSY
PE
ACK
LPTOE
CS2
BDO
PD0–PD7
INIT
AFD
STB
SLIN
INT2
RTS1
DTR1
SOUT1
INT1
ACE
1
Select
and
Control
Logic
ACE
2
Parallel
Port
3
8
8
8
28
31
29
30
41
32
14 – 21
35 – 33
36
37
39
4
63
65
66
67
68
1
38
24
25
26
45
44
53 – 46
57
56
55
58
59
RTS0
DTR0
SOUT0
INT0
12
11
10
60
13
5
8
6
62
3