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SH7721 Datasheet(PDF) 816 Page - Renesas Technology Corp

Part # SH7721
Description  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
PDF  1524 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7721 Datasheet(HTML) 816 Page - Renesas Technology Corp

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Section 22
Analog Front End Interface (AFEIF)
Rev. 3.00 Jan. 18, 2008 Page 754 of 1458
REJ09B0033-0300
6. After 4 digits of dial pulses are sent, interrupt is generated. (DPST is reset to "0")
7. Set DPNQ1
→ "3456H".
8. Write "1" to DPST (ACTR2).
9. After 4 digits of dial pulses are sent, interrupt is generated. (DPST is reset to "0")
10. Set DPNQ2
→ "70XXH".
11. Write "1" to DPST (ACTR2).
12. After 1 digit of dial pulse is sent, interrupt is generated. (DPST is reset to "0", and finish
sending)
22.4.4
Wake up Ringing Interrupt
System wake up function by the ringing signal from telephone line is realized by inputting
AFE_RDET signal, which is an input signal for ringing, to PINT pin.



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