Sony HCD-MD515 - Component For Dhcmd515, Service Manual, Page: 66 / 110

– 102 –
Pin No. Pin Name I/O Function
52 AVREF0 I Reference voltage (+5V) input terminal (for D/A converter)
53 to 55 KEY0 to KEY2 I KEY input terminal Not used (fixed at “L”)
56 SELECT0 I
57 SELECT1 I
58 DISC SENSOR I Detection input from the disc in detect sensor (Q501) “H”: disc in
59 MID SENSOR I Detection input from the tray close detect sensor (IC501) “H”: tray closed
60 I Not used (fixed at “L”)
61 AVSS – Ground terminal (for A/D converter)
62 TEST I Test input terminal (fixed at “L” in this set)
63 O Not used (open)
64 AVREF0 I Reference voltage (+5V) input terminal (for D/A converter)
65 SRDT I Serial data input terminal from the CD text decoder (IC104)
66 O Not used (open)
67 SCLK O Clock signal output terminal to the CD text decoder (IC104)
68 SUBQ I Subcode Q data input from the CXD2519Q (IC103) in CD section
69 O Not used (open)
70 SQCLK O Clock signal output terminal to the CXD2519Q (IC103) in CD section
71 XMODE O Reset/power down mode setting output terminal to the CD text decoder (IC104)
72 SENSE2 I Monitor input from the CXA1992AR (IC101) inside status
73 SENSE I Monitor input from the CXD2519Q (IC103) inside status
74 DRVDAT O Serial data output terminal to display Not used (open)
75 DRVCLK O Clock signal output terminal to display Not used (open)
76 to 83 A0 to A7 O Address signal output terminal to the S-RAM (IC601)
84 to 91 D0 to D7 I/O Two way data bus to the S-RAM (IC601)
92 to 98 A8 to A14 O Address signal output terminal to the S-RAM (IC601)
99 A15 O Address signal output terminal to external device Not used (open)
100 VSS – Ground terminal
*1 CD loading motor (M502) control
IN OUT BRAKE RUN IDLE
LD IN (pin
!∞
) “L” “H” “H” “L”
LD OUT (pin
!¢
) “H” “L” “H” “L”
Operation
Terminal
*2 CD elevator UP/DOWN motor (M501) control
UP DOWN BRAKE RUN IDLE
STKUP (pin
!¶
) “L” “H” “H” “L”
STKDOWN (pin
!§
) “H” “L” “H” “L”
Operation
Terminal
Input terminal for separate/complete type setting of CD section and other sections
“H”: complete type, “L”: separate type (fixed at “H” in this set)
Input terminal for Japanese letter input function setting
“L”: input possible (fixed at “H” in this set)