Yamaha R-N500, Руководство по обслуживанию

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Key detection for A/D port
Key input (A/D) pull-up resistance: 10 k-ohms
Destination detection for A/D port
Pull-up resistance: 10 k-ohms
Pin
No.
Port Name
Function Name
(P.C.B.)
I/O
Detail of Function
FULL ON PO
WER OFF
MCU SLEEP A
C OFF
104 P0_7 DAC_N_CS O O O O DAC chip select
105 P0_6 NCPU_AMUTE I O O O NET audio mute demand
106 AN0_5 PS3_PRT AD PS protection detection 3
107 AN0_4 PS2_PRT AD PS protection detection 2
108 AN0_3 (reserve) AD AD spare
109 AN0_2 USB_VBUS_PRT AD I I I USB iPad power supply feedback
110 AN0_1 THM3 AD I I I
Temperature detection 3 / near diode bridge heat sinking plate (NTC
thermister) of MAIN P.C.B.
111 AN0_0 DEST AD I I I Model distinction
112 P11_7 NCPU_N_RST O O O O
113 P11_6 DIR_SDO I I O I DIR_SDO input for CDDA writing
114 P11_5 DIR_WCK I I O I DIR_WCK input for CDDA writing
115 P11_4 TUNI2C_ON O O O O (reserved) / I2C switching to Tuner
116 P11_3 VO_N_MT O O O O Composite video selector mute
117 P11_2 VSEL3 O O O O Select of video input
118 P11_1 VSEL2 O O O O Select of video input
119 P11_0 VSEL1 O O O O Select of video input
120 AN7 DC_PRT AD I I I Power amplifier DC detection
121 AN6 AMP_OLV AD I I I Power amplifier output level detection
122 AN5 THM1 AD I I I Temperature detection 1
123 AN4 THM2 AD I I I
124 AN3 KEY2 AD I I I KEY AD value uptake 2
125 AN2 KEY1 AD I I I KEY AD value uptake 1
126 AN1 PS1_PRT AD I I I PS protection detection 1
127 AVSS AVSS MCU MCU MCU MCU Microprocessor ground
128 P10_0 (no_use) O O O O AD spare
FULL ON : During normal operation
POWER OFF : During transition from normal operation to standby state
MCU SLEEP : Standby state
AC OFF : During transition from normal operation to AC off
0 Ω +1 kΩ +1 kΩ +1.5 kΩ +1.8 kΩ +2.2 kΩ +3.3 kΩ +4.7 kΩ
Detected voltage value
at 125 pin
0 – 0.14 V 0.16 – 0.41 V 0.43 – 0.7 V 0.71 – 1 V 1.01 – 1.27 V 1.28 – 1.55 V 1.57 – 1.85 V 1.86 – 2.14 V
A/D value
(3.3 V=255)
000 – 011 012 – 032 033 – 054 055 – 077 078 – 098 099 – 120 121 – 143 144 – 165
KEY1 ENTER RETURN TUNING TUNING AM FM PRESET PRESET
0 Ω +1 kΩ +1 kΩ +1.5 kΩ +1.8 kΩ +2.2 kΩ
Detected voltage value
at 124 pin
0 – 0.14 V 0.16 – 0.41 V 0.43 – 0.7 V 0.71 – 1 V 1.01 – 1.27 V 1.28 – 1.55 V
A/D value
(3.3 V=255)
000 – 011 012 – 032 033 – 054 055 – 077 078 – 098 099 – 120
KEY2 CLEAR MEMORY DISPLAY DIMMER SPEAKERS A SPEAKERS B
R5418
on OPERATION (2) P.C.B.
0 Ω 1.2 kΩ 2.7 kΩ 4.7 kΩ 6.8 kΩ 10 kΩ 15 kΩ 47 kΩ 100 kΩ
Detected voltage value
at 111 pin
0 – 0.16 V 0.17 – 0.51 V 0.52 – 0.85 V 0.86 – 1.18 V 1.19 – 1.48 V 1.49 – 1.80 V 1.81 – 2.20 V 2.58 – 2.87 V 2.88 – 3.16 V
A/D value
(3.3 V=255)
000 – 012 013 – 039 040 – 066 067 – 091 092 – 114 115 – 139 140 – 170 199 – 222 223 – 244
DEST U C R, S K A B, G L
R-N500
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