CMX602B Ver la hoja de datos (PDF) - MX-COM Inc
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CMX602B Datasheet PDF : 22 Pages
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Calling Line Identifier plus Call Waiting (Type II)
Output of FSK Demod:
IRQ output:
RXCLK input:
RXD output:
START 1
9
CMX602B PRELIMINARY INFORMATION
Received Character 'n'
2
3
4
5
6
7
8 STOP
1
8
IRQ
RXCLK
RXD
tD
tCLO
tCHI
tD
tD
Data Bit 1
Data Bit 2
Retimed data bits from
received character 'n'
tD = Internal CMX602B delay (max 1µS); tCLO = RXCLK low time (min 1µS); tCHI = RXCLK high time (min 1µS)
Figure 7: FSK Operation with Data Retiming
Note: If enabled, the Data Retiming block will interpret the FSK Channel Seizure signal (a sequence of
alternating mark and space bits) as valid received characters, with values of 55 (hex). Similarly it may
interpret speech or other signals as random characters.
4.7 FSK Data Without Retiming
If the Data Retiming facility is not required, the RXCLK input to the CMX602B should continuously be kept
high. The asynchronous data from the FSK Demodulator is then connected directly to the RXD output pin
and the IRQ output will not be activated by the FSK signal. This case is illustrated in Figure 8.
FSK Demod output:
RXD output:
Received Character 'n'
START 1
2
3
4
5
6
7
8 STOP
START 1
2
3
4
5
6
7
8 STOP
Figure 8: FSK Operation without Data Retiming (RXCLK always high)
2000 MX-COM, Inc
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480204.002
4800 Bethania Station Road, Winston-Salem, NC 27105-1201, USA All trademarks and service marks are held by their respective companies.
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