HD6417727BP160CV Datasheet, PDF (735/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Section 21 Analog Front End Interface (AFEIF)
5. Write “1” to DPST (ACTR2). (Start sending dial pulse)
6. After 4 digit 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 digit 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”, finish sending)
21.3.4 Wake up Ringing Interrupt
System wake up function by the ringing signal from telephone line is realized by inputting
AFE_RDET signal, that is an input signal for ringing, to PINT pin.
Rev.6.00 Mar. 27, 2009 Page 677 of 1036
REJ09B0254-0600