PD178016GC-051_15 Datasheet, PDF (21/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
2.5 Description of the Key Matrixes
2.5.1 Initial setting diode matrix
The initial setting diode matrix is used to determine the function of the µPD178016GC-051. This matrix must be
set.
The initial setting diode matrix is read only when the microcontroller is reset by means of power-ON clear. It is
ignored at all other times.
(1) Switches used to specify the method for detecting a station during auto-tuning
AM SD/IF, FM SD/IF
(2) Switches used to specify the intermediate frequency for the AM band
AMIF1, AMIF2
(3) Switch used to specify whether to turn auto-retuning on or off
RETUNE
(4) Switches related to the clock functions
CLK24, CTADJ, CTOFF, FLASH, NOCLK
(5) Switches used to specify the electronic volume control function
FAD, VOLSEL
(6) Switch used to specify whether a beep is output
BEEP
(7) Switch used to select the destination market (Europe/USA)
AMERICA
(8) Switch used to validate the use of the REGION key function
REGION
(9) Switch used to specify whether the mute function is used during PI check of AF
NO_PIM
(10) Switches used to specify the AF function
AFALL, DEV_SEL
(11) Switches used to select the number of error correction bits when RDS data is decoded
ERR_COR1, ERR_COR2, ERR_COR3
(12) Switch used to select the method for inputting the POWER key
POWER1
(13) Switch used to select display during power off
POWER2
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