IC DESCRIPTION
IC, ?PD178018AGF/IC, ?PD178006AGC-539-3B9
Pin No.Pin NameI/ODescription
AM/FM S-MI1AF signal input during RDS AF operation and FM S meter signal input
LEVEL-MI2Level meter signal input
A-VOL CONTI3Detects microphone input for auto volume operation.Pulled down when not used.
CD CONNECTI4CD changer connection check. Pulled down when not used.
Determines the timing with which data is transferred to the head unit.Open when not
CD DISP SELO5used.
CD CLOO6Clock output to CD changer. Open when not used.
CD DII7Data input from CD changer. Pulled down when not used.
CD DOO8Data output to CD changer. Open when not used.
CD CLII9Clock input from CD changer. Open when not used.
LCD CEO10LCD DRV (LC75854W) CE output.
11DFP LAMPOOutputs "H" only when FLAP IN (pin 67) is "L".Open when not used.
12LCD DII/OLCD DRV (LC75854W) data input.
13LCD DOOOpen when not used. LCD DRV (LC75854W) data output.
14LCD CLOOLCD DRV (?IPD16432B) clock output. LCD DRV (LC75854W) clock output.
15CD ACC CONTOTransmits the power on/off status of head unit to changer. Open when not used.
16POWER MUTEOMuting output to power amp
17ST-BY MUTEOStandby/muting output to power amp
18POWER CONTOUnit power control output
19CONT 1OLCD DRV power control 1
20CONT 2OLCD DRV power control 2
21GND�Ground for port
22VDD�Power supply for port
23MUTEOAudio muting output
24BAND CONTOAM/FM power switching output. AM:�H�, FM: OL�.
25RADIO CONTORadio ON/OFF. Power switching output. Radio ON: OH�.
26RDS MODEOOutputs "H" during RDS AF operation. Open when not used.
27IF REQOOutput to request IF count signal.
28AM IFIAM IF count signal input
29FM IFIFM IF count signal input
30VDD�Power supply for PLL
31FM OSCIFM local oscillation input
32AM OSCIAM local oscillation input
33GND�Ground for PLL
34EO 0OError output from charge pump (for FM)
35EO 1OError output from charge pump (for AM)
36GND�Ground
37LOC/DXOLOC/DX switching output during radio seek (LOC: "H", DX: "L"). Open when not
used.
38ST IND/SD INIStop pulse input during FM/AM seek.
39PHONE MUTEIMuting control input -20 dB. Mute: OL�.
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