IT8673F View Datasheet(PDF) - ITE Tech. INC.
Part Name
Description
Manufacturer
IT8673F Datasheet PDF : 128 Pages
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13.8 Serial Port, ASKIR, SIR and Consumer Remote Control Timings
IT8673F
Symbol
Parameter
t1
Single Bit Time in Serial Port and
ASKIR
Conditions
Transmitter
Receiver
Min.
tBTN – 25 Note1
tBTN – 2%
Max.
tBTN + 25
tBTN + 2%
Unit
nsec
nsec
t2
Modulation Signal Pulse Width in
ASKIR
Transmitter
Receiver
950
500
1050
nsec
nsec
t3 Modulation Signal Period in ASKIR
Transmitter
Receiver
1975
2000X(23/24)
2025
2000X(25/24)
nsec
nsec
t4 SIR Signal Pulse Width
Transmitter,
Variable
Transmitter,
Fixed
(3/16) x tBTN – 25
1.48
(3/16) x tBTN + 25
1.78
nsec
µsec
Receiver
1
µsec
Note 1: tBTN is the nominal bit time in Serial Port, ASKIR, and SIR. It is determined by the setting on the Baud
Rate Divisor registers.
Serial Port
t1
t2
t3
Sharp-IR
Consumer Remote
Control
t4
SIR
13.9 Modem Control Timings
Symbol
Parameter
t1 Float to active delay
CTS1#, DSR1#, DCD1#,
CTS2#, DSR2#, DCD2#
Interrupt
(Internal signal)
t1
(Read MSR)
RI1#, RI2#
Min.
Typ.
Max.
40
Unit
nsec
t1
(Read MSR)
t1
114
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