ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 201

• Manufacturer Part Number: ml7084-001
• Description: 4ch Voip Codec
• Manufacturer: Oki Semiconductor

Dial Pulse Transmitter 0 (DPGEN0)
If the general-purpose input/output port GPIOA[0] is configured as its secondary function (DPO0: dial pulse output
pin), the dial pulse transmitter 0 can output dial pulse signals.
The dial pulse transmitter 0 is enabled when the DPGEN0 transmission control register (DPGEN0_EN) is “1”, and
outputs dial pulse signals for the number of pulses set in the DPGEN0 dial pulse count setting register
(DPGEN0_D[3:0]). Figure 57 shows the dial pulse output timing.
The speed of dial pulses can be chosen between 10 pps and 20 pps with the DPGEN0 speed control register
(DPGEN0_PPS). The make ratio can also be adjusted by setting the duration of the break interval by
DPGEN0_DUTY. Additionally, the output polarity of dial pulse signals can be changed by the DPGEN0 output
polarity control register (DPGEN0_POL).
A. DPGEN0 transmission control register (DPGEN0_EN)
B. DPGEN0 dial pulse count setting register (DPGEN0_D[3:0])
OKI Semiconductor
0 : Stops transmission (Initial value)
1 : Carries out transmission
Initial value : 0h
Upper limit: 10 (data: Ah)
Lower limit: 1 (data: 1h)
GPIOA[0]
/DPO0
GPIOA[0]
/DPO0
DPGEN0_EN
Positive logic
Negative logic
DPGEN0_EN
- When the dial pulse speed is 10 pps, the output polarity is positive logic,
- When the dial pulse speed is 10 pps, the output polarity is negative logic,
- Setting of output polarity and adjustment of make ratio
and the number of output pulses is 10:
and the number of output pulses is 2:
GPIOA[0]
GPIOA[0]
/DPO0
/DPO0
Figure 57 Dial Pulse Output Timing
Output polarity can be changed (DPGEN0_POL).
The make ratio can be adjusted by setting the duration of the break
interval (DPGEN0_DUTY).
0.1 sec/10 pps (0.05 sec/20 pps)
interval
DPGEN0_OFF_TIM
Break
interval
Make
interval
Break
DPGEN0_OFF_TIM
interval
Make
FEDL7224-001FULL-01
ML7224-001TC
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