Yamaha RX-V373 Service Manual page 65

I/O
Pin Function Name
Port Name
No. (P.C.B.)
98 N_INT3 USB_MCHNG IRQ USB file reproduction end flag input
99 P1_4 USB_N_RST O O USB device reset
100 SDA6 USB_SDA SI O USB I2C synchronization data input and output
101 SCL6 USB_SCL SO I+ USB I2C synchronous clock output
102 P1_1 (reserve) O O
103 P1_0 (reserve) O O
104 P0_7 DAC_N_CS O O DAC chip select
105 P0_6 APL_N_RST O O Apple certification chip reset
106 AN0_5 (reserve) AD AD spare
107 AN0_4 (reserve) AD AD spare
108 AN0_3 (reserve) AD AD spare
109 AN0_2 (reserve) AD AD spare
110 AN0_1 THM3 AD I Temperature detection 3
111 AN0_0 DEST_FCT AD AD spare
112 P11_7 (no_use) O O
113 P11_6 DIR_SDO I O DIR_SDO input for CDDA writing
114 P11_5 DIR_WCK I O DIR_WCK input for CDDA writing
115 P11_4 CPNT_N_PS O O Component video selector IC power save
116 P11_3 VO_N_MT O O Composite video selector mute
117 P11_2 VSEL3 O O Video input select
118 P11_1 VSEL2 O O Video input select
119 P11_0 VSEL1 O O Video input select
120 AN7 DC_PRT AD I Power amp DC detection
121 AN6 AMP_OLV AD I Power amp output level detection
122 AN5 THM1 AD I Temperature detection 1
123 AN4 THM2 AD I Temperature detection 2
124 AN3 KEY2 AD I KEY AD value uptake 2
125 AN2 KEY1 AD I KEY AD value uptake 1
126 AN1 PS_PRT AD I PS protection detection
127 AVSS AVSS MCU MCU Microprocessor ground
128 P10_0 (no_use) O O AD spare
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
0 Ω + 1.0 kΩ + 1.5 kΩ + 1.8 kΩ
Detected voltage value
0 – 0.15 V 0.15 – 0.48 V 0.49 – 0.82 V 0.83 – 1.14 V 1.15 – 1.46 V 1.47 – 1.79 V 1.80 – 2.12 V 2.13 – 2.40 V 2.41 – 2.91 V
at 125 pin
A/D value (3.3 V=255) 0 – 11 12 – 37 38 – 64 65 – 88
Key name TUNING TUNING
STRAIGHT AM
(KEY1: 125 pin) >> <<
0 Ω + 1.0 kΩ + 1.0 kΩ + 1.5 kΩ
Detected voltage value
0 – 0.15 V 0.15 – 0.42 V 0.43 – 0.70 V 0.71 – 0.97 V 0.98 – 1.24 V 1.25 – 1.53 V 1.54 – 1.84 V 1.84 – 2.10 V 2.11 – 2.33 V 2.34 – 2.54 V 2.55 – 2.97 V
at 124 pin
A/D value (3.3 V=255) 0 – 11 12 – 32 33 – 54 55 – 75
Key name SCENE SCENE SCENE SCENE PROGRAM
(KEY2: 124 pin) RADIO CD TV BD/DVD
Detail of Function
+ 2.2 kΩ + 3.3 kΩ + 4.7 kΩ + 8.2 kΩ + 10 kΩ
89 – 113 114 – 139 140 – 164 165 – 186 187 – 226
PRESET PRESET
FM MEMORY INFO
> <
+ 1.5 kΩ + 2.2 kΩ + 3.3 kΩ + 4.7 kΩ (22 kΩ + 33 kΩ) + 22 kΩ
76 – 96 97 – 119 120 – 142 143 – 163 164 – 181 182 – 197
PROGRAM INPUT INPUT
–
> < > < (Power)
+ 33 kΩ
198 – 229
TONE
CONTROL
RX-V373/HTR-3065
65