CMX867D2 CML Microcircuits, CMX867D2 Datasheet - Page 24

• Manufacturer Part Number: CMX867D2
• Description: Low power V.22 modem
• Manufacturer: CML Microcircuits

Low Power V.22 Modem
1.5.10.4
Receive Mode Register: 16-bit write-only.
This register controls the CMX867 receive signal type and level.
All bits of this register are cleared to 0 by a General Reset command, in Powersave mode or when b7
(Reset) of the General Control Register is 1.
2001 Consumer Microcircuits Limited
Bit:
Rx Mode Register b15-12: Rx mode
These 4 bits select the receive operating mode.
b15
Rx Mode Register b11-9: Rx level
These three bits set the gain of the Rx Gain Control block.
15
Rx mode = Tones detect
b11
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
Receive Mode Register
Rx mode = Disabled
Rx mode = modem
b14
14
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
b10
1
1
0
0
1
1
0
0
13
b13
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
12
b9
b12
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
11
Receiver disabled
Receiver disabled
V.22/Bell 212A 1200 bps DPSK
V.22 600 bps DPSK
V.21 300 bps FSK
Bell 103 300 bps FSK
V.23 FSK
Bell 202 FSK
DTMF, Programmed tone pair, Answer Tone, Call Progress detect
Receiver disabled
-1.5dB
-3.0dB
-4.5dB
-6.0dB
-7.5dB
-9.0dB
-10.5dB
0dB
Rx level
Rx level
10
9
Set to 0000 0000 0000
C-BUS address $E2
Eq
“
“
“
“
“
“
8
24
Descrambl
7
DTMF/Tones/Call Progress select
6
Start-stop/Synch
5
(Reserved for future use)
(Reserved for future use)
High band (Calling modem)
Low band (Answering modem)
High band (Calling modem)
Low band (Answering modem)
High band (Calling modem)
Low band (Answering modem)
High band (Calling modem)
Low band (Answering modem)
1200 bps
75 bps
1200 bps
150 bps
4
3
2
No. of bits and
parity
1
0
CMX867
D/867/2