PD17012GF-058_15 Datasheet, PDF (61/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
4. MODE TRANSITION
The radio set is turned on or off by switching the RDSET switch.
The RDSET, TPSET, and CDSET switches are enabled only when the CE and IGNITION pins are high.
When the IGNITION pin is made low, clock display is not provided regardless of state of the initial setting diode
NOCLK. However, when NOCLK = 0 (for using the clock), the clock operates.
Transition to alarm mode is possible when the IGNITION pin is at a low level.
The CE pin must be fixed to a high level.
(1) Mode transition when the IGNITION pin is raised from low to high
The RDSET switch is used to turn on or off radio mode.
The TPSET and CDSET switches are used to switch to tape mode and CD mode.
IGNITION = low
The function is
disabled.
<7><8><9>
Alarm mode
IGNITION = low → high
Wait for 100 ms
maximum
<2><3>
<2><4><5>
<2><4><6>
<1>
Tape mode
Radio mode
Power-off mode
CD mode
Remark The numbers in brackets (< >) represent the following:
<1>: CDSET switch on
<6>: RDSET switch off
<2>: CDSET switch off
<7>: IGNITION pin off (low level)
<3>: TPSET switch on
<8>: ALARM key on
<4>: TPSET switch off
<9>: DISALARM switch = 0
<5>: RDSET switch on
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