Datasheet

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SLLS177H − MARCH 1994 − REVISED JANUARY 2006
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
t
d22
t
d22
WR
(WR MCR)
RTS, DTR,
OUT1
, OUT2
CTS, DSR, DCD
t
d23
t
d24
t
d23
INTRPT
(modem)
RD2
(RD MSR)
RI
50% 50%
50% 50%
50%
50%
50%
50%
50%
50%
Figure 16. Modem Control Timing Waveforms
Midpoint of Stop Bit
t
d25
t
su4
CTS
SOUT
50% 50%
50%
Figure 17. CTS and SOUT Autoflow Control Timing (Start and Stop) Waveforms
t
d27
SIN
50%
t
d26
50%
50%
Midpoint of Stop Bit
RTS
RBRRD
Figure 18. Auto-RTS Timing for RCV Threshold of 1, 4, or 8 Waveforms