Digital Line to POTS Interface
CMX605
Tone Field 2, MODE Register bit 1 and bit 0 = ‘1’ and ‘0’ respectively
TX TONES Register Bits
D7
D6
D5
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
4-7
D4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
(Hz)
0 = OFF
700
900
1100
1300
1500
1700
-
950
1400
1800
2130
697
770
852
941
TX TONES Register Bits
D3
D2
D1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
0-3
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
(Hz)
0 = OFF
700
900
1100
1300
1500
1700
-
2100
2225
-
2750
1209
1336
1477
1633
Tone Field 3, MODE Register bit 1 and bit 0 = ‘1’ and ‘1’ respectively
TX TONES Register Bits
D7
D6
D5
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
4-7
D4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
(Hz)
0 = OFF
540
660
780
900
1020
1140
-
1380
1500
1620
1740
1860
1980
-
-
TX TONES Register Bits
D3
D2
D1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
0-3
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
(Hz)
0 = OFF
540
660
780
900
1020
1140
-
1380
1500
1620
1740
1860
1980
-
-
©
2001 Consumer Microcircuits Limited
9
D/605/6
CMLMICRO [ CML MICROCIRCUITS ]
