CMX869 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX869' PDF : 46 Pages View PDF
Low Power V.32 bis Modem
CMX869
6.9 QAM Modem Status Register
QAM Modem Status Register: 16-bit read-only.
C-BUS address $EB
This register should only be read from when b13 (Programming Flag bit) of the Status Register is 1.
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Messages
000
SNR
Mode
QAM Modem Status Register b15-10: Messages
b15 b14 b13 b12 b11 b10
111
110
101
Bit Rate
Bit Rate
Bit Rate
100
Bit Rate
011
Bit Rate
0
1
0
1
1
1
0
1
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
0
0
1
0
0
1
1
0
1
0
0
1
0
0
1
0
0
0
1
0
1
0
0
0
0
0
0
1
1
1
1
Other combinations of b15-10
R5 received
R4 received
R3 received
R2 received
R1 received
Rate negotiation request detected
Retrain request detected
Emergency retrain started
Carrier lost
V.32 preamble detected
S1 detected
SB1 detected
USB1 detected
2100Hz detected
unused
Bit Rate field of Messages (see above)
b12 b11 b10
1
1
1 14400
1
1
0 12000
1
0
1 9600
1
0
0 9600
0
1
1 7200
0
1
0 4800
0
0
1 2400
0
0
0 1200
V.32 bis
V.32 bis
V.32 / V.32 bis (with Trellis coding)
V.32 (no Trellis coding)
V.32 bis
V.32 / V.32 bis
V.22 bis
V.22 / V.22 bis
QAM Modem Status Register b9-7: Unused (000)
© 2003 CML Microsystems Plc
33
D/869/1
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