Datasheet

MODEM CONTROL SWITCHING CHARACTERISTICS
(1)
PARAMETER MEASUREMENT INFORMATION
TL16C550D , , TL16C550DI
SLLS597E – APRIL 2004 – REVISED DECEMBER 2008 .................................................................................................................................................. www.ti.com
over recommended ranges of supply voltage and operating free-air temperature, C
L
= 75 pF
PARAMETER ALT. SYMBOL TEST CONDITIONS MIN MAX UNIT
t
d22
Delay time, WR2 MCR to output t
MDO
See Figure 15 50 ns
t
d23
Delay time, modem interrupt to set INTRPT t
SIM
See Figure 16 35 ns
t
d24
Delay time, RD2 MSR to reset INTRPT t
RIM
See Figure 16 40 ns
baudout
t
d25
Delay time, CTS low to SOUT ↓ See Figure 17 24
cycles
baudout
t
d26
Delay time, RCV threshold byte to RTS↑ See Figure 18 2
cycles
baudout
t
d27
Delay time, read of last byte in receive FIFO to RTS↓ See Figure 18 2
cycles
baudout
t
d28
Delay time, first data bit of 16th character to RTS↑ See Figure 19 2
cycles
baudout
t
d29
Delay time, RBRRD low to RTS↓ See Figure 19 2
cycles
(1) THRE = transmitter holding register empty
Figure 5. Baud Generator Timing Waveforms (for PT and PFB Packages Only)
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