TL16C552A, TL16C552AM
DUAL ASYNCHRONOUS COMMUNICATIONS ELEMENT
WITH FIFO
SLLS189D – NOVEMBER 1994 – REVISED JANUARY 1999
PARAMETER MEASUREMENT INFORMATION
IOW
(WR MCR)
50%
50%
t
t
pd9
pd9
50%
50%
RTS, DTR
CTS, DSR, DCD
50%
50%
50%
t
t
pd10
pd10
50%
INT0, INT1,
1 INT, 2 INT
50%
50%
t
t
pd12
pd11
IOR
(RD MSR)
50%
50%
RI
Figure 14. Modem Control Timing Waveforms
Valid
50%
DATA
50%
t
t
h6
su7
STB
ACK
50%
50%
t
w6
50%
50%
t
d10
t
w8
t
d11
BUSY
50%
d12
50%
50%
t
t
w7
Figure 15. Parallel Port Timing Waveforms
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265