FX469 Ver la hoja de datos (PDF) - CML Microsystems Plc
Número de pieza
componentes Descripción
Fabricante
FX469 Datasheet PDF : 9 Pages
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Application Information ......
Tx
ENABLE
tESET
Tx
SYNC
Tx DATA
DC = Don’t Care
DV = Data Valid
t DSET
DC
DV
t DH
DC
t TxD
1200 BAUD
Tx OUTPUT
OPEN CIRCUIT
t TDR
t TDR
DV
DC
DV
DC
2400 BAUD
Tx OUTPUT
OPEN CIRCUIT
OPEN CIRCUIT
OPEN CIRCUIT
Fig.4 Transmitter Timing
Characteristics
Note
Tx Delay, Signal to Disable Time
t
3
ESET
Data Set-Up Time
tDSET
1
Data Hold Time
t
DH
Tx Delay to O/P Time
tTxD
Tx Data Rate Period
tTDR
3
Rx Data Rate Period
tRDR
3
Undetermined State
Internal Rx Delay
tID
1. Consider the Xtal/Clock tolerance.
2. All Tx timings are related to the Tx Sync Output.
3. 1200 baud example.
Min.
2.0
2.0
2.0
-
-
800
-
-
Typ.
-
-
-
1.2
833
-
-
1.5
Max.
800
-
-
-
-
865
2.0
-
Unit
µs
µs
µs
µs
µs
µs
µs
ms
Rx
SIGNAL I/P
2400/4800 BAUD
LOGIC ’1’
LOGIC ’0’
Rx
SIGNAL I/P
1200 BAUD
1
Rx
SYNC O/P
(1200Hz)
0
1
CLOCKED
DATA O/P
0
t ID
t RDR
Fig.5 Rx Timing Diagram
5
Undetermined
State
LOGIC ’1’
LOGIC ’0’
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