Datasheet

TL16C554A, TL16C554AI
ASYNCHRONOUS-COMMUNICATIONS ELEMENT


SLLS509E − AUGUST 2001 − REVISED JUNE 2010
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
Start
IOR
(RD IIR)
IOW
(
WR THR)
t
pd1
t
d7
t
d5
t
d6
t
pd2
Start
Data (5 −8)
Parity
Stop (1 −2)
t
pd1
TXx
INTx
50%
50%
50%
50%50% 50%
50%
50%
50%
50%
50%
Figure 6. Transmitter Timing Waveforms
Byte #1
IOW
(WR THR)
Data
t
d8
StartParity Stop
t
pd3
TXRDY
TXx
FIFO Empty
50%
50%
50%50%
Figure 7. Transmitter Ready Mode 0 Timing Waveforms
IOW
(WR THR)
TXRDY
Byte #16
Data
t
d8
StartParity Stop
t
pd3
Start
FIFO Full
TXx
50%
50%
50%
50%
Figure 8. Transmitter Ready Mode 1 Timing Waveforms