Key Detection For A/D Port; Key Input (A/D) Pull-Up Resistance: 10 K-Ohms; Destination Detection For A/D Port - Yamaha RX-V475 Service Manual

RX-V475/HTR-4066/RX-V500D
Pin Function Name
Port Name
No.
104 P0_7 DAC_N_CS
105 P0_6 NCPU_AMUTE
106 AN0_5 PS3_PRT
107 AN0_4 PS2_PRT
108 AN0_3 L3_DET
109 AN0_2 USB_VBUS_PRT
110 AN0_1 THM3
111 AN0_0 DEST
112 P11_7 NCPU_N_RST
113 P11_6 DIR_SDO
114 P11_5 DIR_WCK
115 P11_4 TUNI2C_ON
116 P11_3 VIDI2C_ON
117 P11_2 MHL_CD_IN5
118 P11_1 MHL_VBUS_N_PRT
119 P11_0 MHL_VBUS_PON
120 AN7 DC_PRT
121 AN6 AMP_OLV
122 AN5 THM1
123 AN4 THM2
124 AN3 KEY2
125 AN2 KEY1
126 AN1 PS1_PRT
127 AVSS AVSS
128 P10_0 (no use)

Key detection for A/D port

Key input (A/D) pull-up resistance: 10 k-ohms

0 Ω
Detected voltage value 0 –
at 125 pin 0.15 V
A/D value
0 – 11
(3.3 V=255)
RADIO
KEY1
(SCENE4)
0 Ω
Detected voltage value 0 –
at 124 pin 0.15 V
A/D value
0 – 11
(3.3 V=255)
KEY2 DIRECT

Destination detection for A/D port

Pull-up resistance: 10 k-ohms
R5419
0 Ω
on OPERATION P.C.B.
Detected voltage value 0 –
at 111 pin 0.162 V
A/D value 000
Destination J
82
I/O
(P.C.B.)
O O O
I O O
AD
AD
AD I
AD I
AD I
AD I
O O O
I I O
I I O
O O O
O O O
I I
I I
O O O
AD I
AD I
AD I
AD I
AD I
AD I
AD I
MCU MCU MCU
O O O
+ 1.0 kΩ + 1.0 kΩ + 1.5 kΩ + 1.5 kΩ
0.15 – 0.425 – 0.703 – 0.978 –
0.425 V 0.703 V 0.978 V 1.241 V
12 – 32 33 – 54 55 – 75 76 – 96
NET TV BD/DVD
(SCENE3) (SCENE2) (SCENE1)
+ 1.0 kΩ + 1.0 kΩ + 1.5 kΩ + 1.8 kΩ
0.15 – 0.425 – 0.703 – 0.999 –
0.425 V 0.703 V 0.999 V 1.279 V
12 – 32 33 – 54 55 – 77 78 – 99
AM
(RX-V475/
TUNING TUNING
HTR-4066)
>> <<
DAB
(RX-V500D)
1.2 kΩ 2.7 kΩ 4.7 kΩ 6.8 kΩ
0.162 – 0.517 – 0.872 – 1.193 –
0.517 V 0.872 V 1.193 V 1.492 V
111 222 333 444
U C R, S
O DAC chip select
O NET audio mute demand
PS protection detection 3
PS protection detection 2
I I D terminal L3 detection
I I USB iPad power supply feedback
I I Temperature detection 3
I I Model distinction
O
I DIR_SDO input for CDDA writing
I DIR_WCK input for CDDA writing
O (reserved) I2C switching to Tuner
O Vdec and A-video selector I2C line control
I I MHL cable detection
I I MHL VBUS overcurrent detection
O MHL VBUS control
I I Power amplifier DC detection
I I Power amplifier output level detection
I I Temperature detection 1
I I Temperature detection 2
I I KEY AD value uptake 2
I I KEY AD value uptake 1
I I PS protection detection 1
MCU Microprocessor ground
O AD spare
+ 2.2 kΩ +3.3 kΩ + 4.7 kΩ
1.241 – 1.536 – 1.84 –
1.536 V 1.84 V 2.102 V
97 – 119 120 – 142 143 – 163
INPUT INPUT
— —
> <
+ 2.2 kΩ +3.3 kΩ + 4.7 kΩ
1.279 – 1.564 – 1.86 –
1.564 V 1.86 V 2.142 V
100 – 121 122 – 144 145 – 166
PRESET PRESET
FM MEMORY
> <
10 kΩ 15 kΩ 47 kΩ
1.492 – 1.816 – 2.572 –
1.816 V 2.2 V 2.869 V
555 666 777
T K A B, G, F
Detail of Function
+ 13.2 kΩ + 22 kΩ + 33 kΩ
2.102 – 2.336 – 2.55 –
2.299 V 2.55 V 2.971 V
163 – 177 182 – 197 198 – 229
TONE
—
(power) CONTROL
+ 6.8 kΩ + 10 kΩ + 22 kΩ + 68 kΩ
2.142 – 2.399 – 2.653 – 2.916 –
2.399 V 2.653 V 2.919 V 3.175 V
167 – 186 187 – 205 206 – 226 227 – 246
PROGRAM PROGRAM
INFO STRAIGHT
>
100 kΩ
2.869 –
3.163 V
888
L, H
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