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
Messages
9
0
8
0
7
0
6
5
4
3
2
1
0
SNR
Mode
QAM Modem Status Register b15-10: Messages
b15 b14 b13 b12 b11 b10
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
1
Bit Rate
Bit Rate
Bit Rate
Bit Rate
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
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Other combinations of b15-10
Bit Rate field of Messages (see above)
b12
b11
b10
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
14400
12000
9600
9600
7200
4800
2400
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)
© 2004 CML Microsystems Plc
33
D/869/4
CMLMICRO [ CML MICROCIRCUITS ]
