CMX868 View Datasheet(PDF) - CML Microcircuits
Part Name
Description
MFG CO.
'CMX868' PDF : 48 Pages View PDF
Low Power V.22 bis Modem
CMX868
Tx Mode Register b2-0: Tx Data and Stop bits (QAM, DPSK, FSK Start-Stop modes)
In Start-stop mode these three bits select the number of Tx data and stop bits.
b2 b1 b0
1
1
1 8 data bits, 2 stop bits
1
1
0 8 data bits, 1 stop bit
1
0
1 7 data bits, 2 stop bits
1
0
0 7 data bits, 1 stop bit
0
1
1 6 data bits, 2 stop bits
0
1
0 6 data bits, 1 stop bit
0
0
1 5 data bits, 2 stop bits
0
0
0 5 data bits, 1 stop bit
Tx Mode Register b2-0: Tx Data source (QAM, DPSK, FSK Synchronous mode)
In Synchronous mode (b4-3 = 11) these three bits select the source of the data fed to the Tx
FSK or QAM/DPSK scrambler and modulator.
b2 b1 b0
1
x
x Data bytes from Tx Data Buffer
0
1
1 Continuous 1s
0
1
0 Continuous 0s
0
0
x Continuous V.22 bis handshake S1 pattern dibits ’00,11’ in DPSK and
QAM modes, continuous alternating 1s and 0s in all other modes.
© 2004 CML Microsystems Plc
24
D/868/9
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