SH7720 Datasheet, PDF (801/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

• ACTR2
Bit
Bit Name
15 to 5 
4
DPST
3
PPS
2
RCEN
1

0
RLYC
Section 22 Analog Front End Interface (AFEIF)
Initial Value
All 0
0
0
0
0
0
R/W Description
R Reserved
These bits are always read as 0. The write
value should always be 0.
R/W Dial Pulse Start
Start bit of dial pulse. Dial number within the
DPNQ register is output to AFE_RLYCNT as
specified by PPS, MRCR and MPCR. After all
dial number is output, DPE interrupt is
generated to modify the DPST bit to 0. See
section 22.4.3, DAA Interface for more detail
about dial pulse output sequence. Take care
that AFE_RLYCNT must be "H" to enable dial
pulse generating circuit
R/W Dial Pulse Duration Set
0: 10 PPS
1: 20 PPS
R/W Ringing Counter Enable
0: Stop Ringing Counter
1: Start Ringing Counter
Note: See section 22.4.3, DAA Interface for
more detail about how to count.
R Reserved
This bit is always read as 0. The write value
should always be 0.
R/W Relay Control
The signal controls Hook Relay.
0: On hook state. AFE_RLYCNT goes Low
Level.
1: Off hook state. AFE_RLYCNT goes High
Level.
Rev. 3.00 Jan. 18, 2008 Page 739 of 1458
REJ09B0033-0300