Datasheet

IOW
(WR MCR)
RTSA, RTSB, DTRA,
DTRB
, OPA, OPB
CTSA, CTSB, DSRA,
DSRB,
CDA, CDB
t
d23
t
d24
t
d23
INT
(modem)
IOR
(RD MSR)
RI
50% 50%
50% 50%
50%
50%
50%
50%
50%
50%
t
d22
t
d22
IOW
(WR THR)
Parity
Stop
Data
Start
Byte 16
TXA, TXB
TXRDYA
, TXRDYB
FIFO Full
t
d20
t
d21
50%
50%
50%
50%
t
d20
IOW
(WR THR)
t
d21
Parity
Stop
Data
Start
Byte 1
TXA, TXB
TXRDYA
, TXRDYB
50%
50%
50%
50%
TL16C2550
SLWS161E –JUNE 2005–REVISED NOVEMBER 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
Figure 19. Tranceiver Ready (TXRDY) Waveforms, FCR0 = 0 or FCR0 = 1 and FCR3 = 0 (Mode 0)
Figure 20. Tranceiver Ready (TXRDY) Waveforms, FCR0 = 0 and FCR3 = 1 (Mode 1)
Figure 21. Modem Control Timing Waveforms
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