CMX469A Ver la hoja de datos (PDF) - CML Microsystems Plc
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Fabricante
CMX469A Datasheet PDF : 16 Pages
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1200/2400/4800 Baud FFSK/MSK Modem
1.7.1 Electrical Performance (continued)
CMX469A
Interface Timings
Notes Min. Typ. Max.
Units
tESET
Tx Delay, Signal to Disable Time
2
2.0
-
800
µs
tDSET
Data Set-Up Time
1
2.0
-
-
µs
tDH
Data Hold Time
2.0
-
-
µs
tTXD
Tx Delay to O/P Time
-
1.2 -
µs
tTDR
Tx Data Rate Period
2
-
833
-
µs
tRDR
Rx Data Rate Period
2
800
-
865
µs
Undetermined State (see Figure 5)
-
-
2.0
µs
tID
Internal Rx Delay
-
1.5
-
ms
Notes:
1. Consider the Xtal/Clock tolerance.
2. 1200 Baud example.
1 x 10-1
* BIT RATE BANDWIDTH
1 x 10 -2
1 x 10 -3
10dB
12dB SNR*
SNR*
1 x 10 -4
1 x 10 -5
50
100
150
200 250 300
500 700 800
INPUT SIGNAL LEVEL (mVrms)
Figure 6 Typical Variation of Bit Error Rate with Input Level
© 2001 Consumer Microcircuits Limited
14
D/469A/2
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