Pin No.Pin NameI/OFunction
38HOLD2IInputs of HOLD switch on the switch unit
39SDTOOSerial data output to the D-RAM controller (IC601) (for ESP)
40SDTIISerial data input from the D-RAM controller (IC601) (for ESP)
41SCKOSerial data transfer clock signal output to the D-RAM controller (IC601) (for ESP)
42FOKIFocus OK signal input from the RF amplifier (IC501) OH�: OK, OL�: NG
43BUSYIBusy signal input from the BU9325KS (IC502) OL�: track jump mode, OH�: servo loop on
44BEEPOBeep sound output to the headphone amplifier (IC302)
45SCORISub-code sync (S0+S1) detection signal input from the BU9325KS (IC502)
46NCONot used (open)
47VDDNPower supply terminal (+3V)
48 to 51 COM3 to COM0OCommon drive signal output to the liquid crystal display on the switch unit
52VREFHIReference voltage input terminal (+3V) (for A/D converter)
53VREFLIReference voltage input terminal (0V) (for A/D converter)
54ESPSL/TESTIService mode setting terminal OL�: service mode, Normally: fixed at OH�
55KEYIKey input from the switch unit (A/D input)
56RMKEYIKey input terminal (A/D input) Not used (open)
57DCINMNTIDC in voltage detection input terminal (A/D input) Also used for DC IN detection
Battery voltage detection input terminal
58BATMNTI
Also used for rechargeable battery/dry battery detection
59CHGMNT1IBattery charging voltage detection input from the MPC18A26VMEL (IC401)
60VSSNGround terminal
Battery voltage detection input terminal (A/D input)
61CHGMNT2I
Also used for rechargeable battery/dry battery detection Not used (fixed at OL�)
62OSMNTIDSP offset voltage adjustment voltage monitor input from the BU9325KS (IC502)
63 to 77 SEG0 to SEG14OSegment drive signal output to the liquid crystal display on the switch unit
78, 79SEG15, SEG16OSegment drive signal output terminal Not used (open)
Error correction OL�: quadruple correction, OH�: double correction
80XEC4I/O
Fixed at OL� in this set
� 34 � |
ACEC
SONY
