Sony HCD-C450 Service Manual page 67

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Pin No. Pin Name
55 VCC
56 CKSW1
57 OCSW1
58 CS0X
59 CS1X
60 CS2X
61 CS3X
62 CS4X
63 CS5X
64 C
65 CS6X
66 CS7X
67 XWAIT
68 BGRNTX
69 BRQ
70 XRD
71 XWRH
72 XWRL
73 XMIX
74 HSTX
75 VSS
76 XFRRST
77 CPUCK
TE
L 13942296513
78 OCSW2
79 XDACK
80 VESCS/X39CS
81 48/44.1K
82 WIDE
83 MAMUTE
84 XLDON
85 to 100 HD0 -15
101 VSS
102 to 109 HA0 - 7
110 VCC
111 to 118 HA8 - 15
119 VSS
120 HA16
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I/O
– Power supply
I Chucking switch (Tray SW1) signal input
I Open/Close switch (Tray SW2) signal input
O Chip select signal output to external ROM
– Not used
O Chip select signal output to AVD SDRAM
O Chip select signal output to AVD R-BUS
O Chip select signal output to IC302(CXD8635R/ARP)
O Chip select signal output to IC302(CXD8635R/SDSP)
– Terminal for built-in regulator bypass capacitor
O FGA CS output
– Not used
I external WAIT signal input
I External bus open aclnowledge signal input (pull-up)
I External bus open request signal input (Not used)
O External bus read enable signal output
O Write signal output for upper byte
O Write signal output for lower byte (Not used)
– Not used
– Not used (pull-up)
– Ground
I Reset signal input
O CPU clock output
I Tray switch signal input
– Not used (pull-up)
– Not used (pull-up)
O PLL IC control signal output
O Video wide offset control signal output
I IFOK signal input from IC901(CPU)
O Laser diode mute control signal output
I/O External data bus bits 0 - 15
– Ground
O Address signal output
– Power supply
O Address signal output
– Ground
O Address signal output
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Description
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