CMX605(1999) 데이터 시트보기 (PDF) - MX-COM Inc
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CMX605 Datasheet PDF : 22 Pages
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Digital Line to POTS Interface
10
CMX605 Preliminary Information
STATUS Register Bits 0 - 3
Bit 3 Bit 2 Bit 1 Bit 0
(D3) (D2) (D1) (D0)
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
DTMF Tone Pairs
Lower Frequency Upper Frequency
(Hz)
(Hz)
941
1633
697
1209
697
1336
697
1477
770
1209
770
1336
770
1477
852
1209
852
1336
852
1477
941
1336
941
1209
941
1477
697
1633
770
1633
852
1633
Keypad Legend
D
1
2
3
4
5
6
7
8
9
0
*
#
A
B
C
Table 9: DTMF Decode Truth Table
A status change of the decoder and the generation of an interrupt will occur both when a tone is first decoded
and also when a tone, which was previously present, is no longer decoded. In the latter case, Bit 4 of the
STATUS Register will be set to “0” to indicate that no tone was detected.
©1999 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480195.003
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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