Sony CDX-MP450X Service Manual page 15

Pin No. Pin Name
63 SENS
64 IN SW
65, 66 N.C
67 MP3
68 PH3
69 SCLK
70 LM LOADING
71 TV RST
72 N.C
73 TE CANCEL
74 FE CANCEL
75 BU IN
76 SCOR
77 MSO
78 MSI
79 MSC
80 MCS
81 LM EJECT
82 DRV OE
83 MD2
84 TEX
85 TX
86 VSS
87 VDD
88 N.C
89 H R/W
90 H RD
91 – 93 HADDR2 – 0
94 H CS
95 N.C
96 H RST
97 – 99 N.C
100 CDM ON
I/O
I Sensitivity input from DSP IC (IC516).
I Disc in switch input
— Not used. (Fixed at H in this set)
I MP3 playback control input (H: not playback, L: playback)
I Photo coupler input 3 (Not used in this set)
O Serial clock output to DSP IC (IC516).
O Loading motor loading (CD tray close) output
O TV encoder IC reset output (Not used in this set)
— Not used. (Open)
O Tracking error offset cancel output of RF amplifier. (Not used in this set)
O Focus error offset cancel output of RF amplifier. (Not used in this set)
I Back-up power supply input
I SCOR input from DSP IC (IC516).
I Serial input from master microcomputer IC (IC801).
O Serial output to master microcomputer IC (IC801).
I Serial clock input from master microcomputer IC (IC801).
I Chip select input from master microcomputer IC (IC801).
O Loading motor eject (CD tray open) output
O Mute control output for driver IC (IC512).
O Check output for operation mode. (Not used in this set)
I Not used. (Connect to VSS)
O not used. (Open)
— Digital ground
— Digital power supply pin
— Not used. (Fixed at H in this set)
O Read/Write select output for MPEG decoder IC (IC514). (H: Read, L: Write)
O Mode select output for MPEG decoder IC (IC514) at read. (H: Multiflux, L: Individual)
O Host address 2 – 0 output for MPEG decoder IC (IC514).
O Host chip select output for MPEG decoder IC (IC514).
— Not used. (Open)
O Host reset output to MPEG decoder IC (IC514).
— Not used. (Open)
O CD mechanism deck loading motor power supply control output (8 V).
Pin Description
CDX-MP450X
15