Yamaha HTR-5890 Service Manual page 41

IC520 : M30805SGP (FUNCTION P.C.B)
16bit µ-COM (Main CPU)
Pin Pin function Function Name Detail of function
62 P53/BCLK/ALE/CLKout BCLK BCLK Open
63 P52/RD/DW RD /RD Flash ROM OE
64 P51/WRH/BHE/CASH WRH BHE Open
65 P50/WRL/WR/CASL WRL /WR Flash ROM WE
66 P127 P127 CPNTD Component DVD signal detect
67 P126 P126 SVIDD S video signal detect
68 P125 P125 /FMTS Full mute SBL / SBR
69 P47/CS0/A23 CS0 CS0 Flash ROM CE
70 P46/CS1/A22 CS1 CS1 Open
71 P45/CS2/A21 CS2 CS2 Open
72 P44/CS3/A20(MA12) CS3 CS3 Open
73 P43/A19(MA11) A19 A19 External ROM address
74 Vcc Vcc VCC +5V
75 P42/A18(MA10) A18 A18 External ROM address
76 Vss Vss VSS Ground
77 P41/A17(MA9) A17 A17 External ROM address
78 P40/A16(MA8) A16 A16 External ROM address
79 P37/A15(MA7)(D15) A15 A15 External ROM address
80 P36/A14(MA6)(D14) A14 A14 External ROM address
81 P35/A13(MA5)(D13) A13 A13 External ROM address
82 P34/A12(MA4)(D12) A12 A12 External ROM address
83 P33/A11(MA3)(D11) A11 A11 External ROM address
84 P32/A10(MA2)(D10) A10 A10 External ROM address
85 P31A9(MA1)(D9) A9 A9 External ROM address
86 P124 P124 /Z2MT Zone2 mute
87 P123 P123 /HPMT Headphone mute
88 P122 P122 /FMTSW Full mute SW L / SW R / SW MONO
89 P121 P121 /FMTC Full mute CENTER
90 P120 P120 /FMTM Full mute MAIN L/R / RL / RR
91 Vcc Vcc VCC +5V
92 P30/A8(MA0)(D8) A8 A8 External ROM address
93 Vss Vss VSS Ground
94 P27/A7(D7) A7 A7 External ROM address
95 P26/A6(D6) A6 A6 External ROM address
96 P25/A5(D5) A5 A5 External ROM address
97 P24/A4(D4) A4 A4 External ROM address
98 P23/A3(D3) A3 A3 External ROM address
99 P22/A2(D2) A2 A2 External ROM address
100 P21/A1(D1) A1 A1 External ROM address
101 P20/A0(D0) A0 A0 External ROM address
102 P17/D15/INT5 D15 D15 External ROM data
103 P16/D14/INT4 D14 D14 External ROM data
104 P15/D13/INT3 D13 D13 External ROM data
105 P14/D12 D12 D12 External ROM data
106 P13/D11 D11 D11 External ROM data
107 P12/D10 D10 D10 External ROM data
108 P11/D9 D9 D9 External ROM data
109 P10/D8 D8 D8 External ROM data
110 P07/D7 D7 D7 External ROM data
111 P06/D6 D6 D6 External ROM data
112 P05/D5 D5 D5 External ROM data
113 P04/D4 D4 D4 External ROM data
114 P114 P114 PRI I protection detect
115 P113 P113 PRY Power relay
116 P112 P112 /Z3MT Zone3 mute
117 P111 P111 PGB Program selector B
118 P110 P110 PGA Program selector A
119 P03/D3 D3 D3 External ROM data
120 P02/D2 D2 D2 External ROM data
121 P01/D1 D1 D1 External ROM data
122 P00/D0 D0 D0 External ROM data
IC520 : M30805SGP (FUNCTION P.C.B)
16bit µ-COM (Main CPU)
I/O On Off Backup Pin Pin function
OPEN OPEN OPEN OPEN 123 P157
O - - - 124 P156
OPEN OPEN OPEN OPEN 125 P155
O - - - 126 P154
I I I OL 127 P153
I I I OL 128 P152
O O OL OL 129 P151
O O OL OL 130 Vss
OPEN OPEN OPEN OPEN 131 P150
OPEN OPEN OPEN OPEN 132 Vcc
OPEN OPEN OPEN OPEN 133 P107/AN7/KI3
- - - - 134 P106/AN6/KI2
VCC VCC VCC VCC 135 P105/AN5/KI1
- - - - 136 P104/AN4/KI0
VSS VSS VSS VSS 137 P103/AN3
- - - - 138 P102/AN2
- - - - 139 P101/AN1
- - - - 140 AVss
- - - - 141 P100/AN0
- - - - 142 Vref
- - - - 143 AVcc
- - - - 144 P97/Adtrg/RxD4/SCL4/STxD4
- - - -
- - - -
O O OL OL
Key Input(A-D) Pull-Up Resistance 10 k-Ohms
O O OL OL
O O OL OL
O O OL OL
KEY0
O O OL OL
VCC VCC VCC VCC
KEY1
- - - -
VSS VSS VSS VSS
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
I I I OL
O O OL OL
O O OL OL
I I I OL
I I I OL
- - - -
- - - -
- - - -
- - - -
Function Name Detail of function
P157 VRB Volume encoder B
P156 VRA Volume encoder A
P155 ISB Input selector B
P154 ISA Input selector A
P153 SCKA Audio IC clock
P152 SDTA Audio IC TX data
P151 CEL SANYO IC CE
Vss VSS Ground
P150 /ICTI IC TI (DA601)
Vcc VCC +5V
P107 /HP Headphone detect
AN6 REC Recout selector
AN5 PLMT Power limiter detect
AN4 KY1 Key SW line 1
AN3 KY0 Key SW line 0
AN2 THM Temperature detect
AN1 PRD DC protection
AVss AVSS AD ground
AN0 PRV PS protection
Vref VREF AD reference
AVcc AVCC AD +5V
RxD4 RXDR 232C / YDC RX data
Ohm 0 k + 1.2 k + 1.2 k + 1.8 k + 2.7 k
V ~ 0.27 ~ 0.75 ~ 1.22 ~ 1.76 ~ 2.28
PRESET/TUNING PRESET/TUNING PRESET/TUNING
FM/AM MEMORY
< > EDIT
SPEAKERS SPEAKERS
– INPUT MODE A/B/C/D/E
A B
HTR-5890
I/O On Off Backup
I I I OL
I I I OL
I I I OL
I I I OL
SCK SCK OL OL
SO SO OL OL
O O OL OL
VSS VSS VSS VSS
O O OL OL
VCC VCC VCC VCC
I I I OL
AD I I I
AD I I I
AD I I I
AD I I I
AD I I I
AD I I I
AVSS AVSS AVSS AVSS
AD I I I
AVCC AVCC AVCC AVCC
AVCC AVCC AVCC AVCC
SI I I OL
+ 3.3 k + 4.7 k + 8.2 k
~ 2.76 ~ 3.24 ~ 3.76
TUNING
– –
MODE
PURE TONE STRAIGHT
DIRECT CONTROL EFFECT
41