SC9200B 데이터 시트보기 (PDF) - Silan Microelectronics
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SC9200B Datasheet PDF : 9 Pages
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SC9200
FUNCTIONAL DESCRIPTION
The SC9200 are DTMF generators for µC interfaces. They are controlled by a µC in the serial mode.
1. Serial mode (SC9200)
The SC9200 employ a data input, a 5-bit code, and a synchronous clock to transmit a DTMF signal. The
relationship between the digital codes and the tone output frequency is shown in Table 1 as for the control timing
diagram, refer to Figure 1.
Table 1: Digits vs. input data vs. tone output frequency (serial mode)
Digit
D4
D3
D2
D1
D0
1
0
0
0
0
1
2
0
0
0
1
0
3
0
0
0
1
1
4
0
0
1
0
0
5
0
0
1
0
1
6
0
0
1
1
0
7
0
0
1
1
1
8
0
1
0
0
0
9
0
1
0
0
1
0
0
1
0
1
0
*
0
1
0
1
1
#
0
1
1
0
0
A
0
1
1
0
1
B
0
1
1
1
0
C
0
1
1
1
1
D
0
0
0
0
0
--
1
0
0
0
0
--
1
0
0
0
1
--
1
0
0
1
0
--
1
0
0
1
1
--
1
0
1
0
0
--
1
0
1
0
1
--
1
0
1
1
0
--
1
0
1
1
1
DTMF OFF
1
1
1
1
1
Tone Output Frequency (Hz)
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
941+1633
697
770
852
941
1209
1336
1477
1633
--
*Notes: The codes not listed in Table 1 are not used D4 is MSB.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0 2004.08.03
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