Service manual

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CD-DD4500
52 CE Output External SRAM chip enable signal output terminal.
53 VDD Input Digital power supply terminal.
54 IO7 Input/Output External SRAM data I/O terminal 7.
55 IO6 Input/Output External SRAM data I/O terminal 6.
56 IO5 Input/Output External SRAM data I/O terminal 5.
57 IO4 Input/Output External SRAM data I/O terminal 4.
58 IO3 Input/Output External SRAM data I/O terminal 3.
59 IO2 Input/Output External SRAM data I/O terminal 2.
60 IO1 Input/Output External SRAM data I/O terminal 1.
61 IO0 Input/Output External SRAM data I/O terminal 0.
62 VSS — Digital ground terminal.
63 AD0 Output External SRAM address output terminal 0.
64 AD1 Output External SRAM address output terminal 1.
65 AD2 Output External SRAM address output terminal 2.
66 AD3 Output External SRAM address output terminal 3.
67 AD4 Output External SRAM address output terminal 4.
68 AD5 Output External SRAM address output terminal 5.
69 AD6 Output External SRAM address output terminal 6.
70 AD7 Output External SRAM address output terminal 7.
71 VDD Input Digital power supply terminal.
72 AD8 Output External SRAM address output terminal 8.
73 AD9 Output External SRAM address output terminal 9.
74 AD10 Output External SRAM address output terminal 10.
75 AD11 Output External SRAM address output terminal 11.
76 AD12 Output External SRAM address output terminal 12.
77 AD13 Output External SRAM address output terminal 13.
78 AD14 Output External SRAM address output terminal 14.
79 AD15 Output External SRAM address output terminal 15.
80 AD16 Output External SRAM address output terminal 16.
81 VSS — Digital ground terminal.
82 PO0 Output General-purpose output terminal 0.
83 PO1 Output General-purpose output terminal 1.
84 PO2 Output General-purpose output terminal 2.
85 PO3 Output General-purpose output terminal 3.
86* PO4 Output General-purpose output terminal 4.
87* PO5 Output General-purpose output terminal 5.
88* PO6 Output General-purpose output terminal 6.
89* PO7 Output General-purpose output terminal 7.
90 VDDDL Input Power supply terminal for DLL.
91 LPFO Output LPF output terminal for DLL.
92* DLON Input DLCKS terminal DLON terminal DLL clock setting
"L" "L" SCKI input. (DLL circuit off)
93* DLCKS Input
"L" "H" Quadruple of XI clock
"H" "L" Triple of XI clock
"H" "H" Sextuple ofXI clock
94 SCKO Output ASP clock output terminal.
95 VSSDL — Ground terminal for DLL.
96 SCKI Input External system clock input terminal.
97 VSSX — Ground terminal for crystal oscillation circuit.
98 XO Output Crystal oscillation output terminal.
99 XI Input Crystal oscillation input terminal.
100 VDDX Input Power supply terminal for crystal oscillation circuit.
IC504 RH-iX0443AWZZ: Dolby Decoder (IX0443AW) (2/2)
Terminal Name
Pin No.
Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.