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R-N402/R-N402D
Pin
Function Name
No.
(P.C.B.)
103 NCPU_SPI_N_CS
104 DAC_N_CS
105 NCPU_ADT_MUTE
106 PS3_PRT
107 PS2_PRT
108 NCPU_MUTE1
109 USB_VBUS_PRT
110 THM3_PRT
111 DEST
112 (no_use)
113 DIR_SD0
114 DIR_WCK
115 (no_use)
116 MODEL
117 (no_use)
118 (no_use)
119 (no_use)
120 DC_PRT
121 (no_use)
122 THM
123 (no_use)
124 KEY1
125 KEY0
126 PS1_PRT
127 AVSS
MCU
128 FCT_OUTPUT
FULL ON
POWER OFF
MCU SLEEP
AC OFF
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
0 Ω
Detected voltage
0.000 –
value at 125 pin
0.150 V
A/D value
000 – 012
(3.3 V = 255)
INPUT
KEY0
a
0 Ω
Detected voltage
0.000 –
value at 124 pin
0.150 V
A/D value
000 – 012
(3.3 V = 255)
TUNING
KEY1
46
I/O
O
O
O
O
NW-01 SPI chip select
O
O
O
O
DAC chip select
O
O
O
O
Network audio distribution mute signal
AD
PS protection 3 DIR & DAC power supply monitor
AD
PS Protection 2 NW-01 power supply monitor
O
O
O
O
NW-01 mute signal (1)
AD
USB Protection USB VBUS power supply monitor
AD
I
I
I
Thermal sensor under diode bridge
AD
AD reserve
O
O
O
O
I
I
O
I
Data audio signal check in PCB digital (DIAG)
I
I
O
I
Word clock audio signal check in PCB digital (DIAG)
O
O
O
O
I
I
I
I
For Model recognization R-N402 : H / R-N402D : L
O
O
O
O
O
O
O
O
O
O
O
O
AD
I
I
I
Power amplifier DC detect
AD
I
I
I
Thermal sensor
AD
AD
I
I
I
KEY AD value uptake 2
AD
I
I
I
KEY AD value uptake 1
AD
I
I
I
PPS protection 1 MAIN power supply monitor
MCU
MCU
MCU
CPU ground
AD
O
O
O
Audio signal output check in FCT
: During normal operation
: During transition from normal operation to standby state
: Standby state
: During transition from normal operation to AC off
1 k Ω
1.3 k Ω
1.6 k Ω
0.150 –
0.459 –
0.771 –
0.459 V
0.771 V
1.088 V
012 – 035
035 – 060
060 – 084
INPUT
TREBLE
TREBLE
+
1 k Ω
1.3 k Ω
1.6 k Ω
0.150 –
0.459 –
0.771 –
0.459 V
0.771 V
1.088 V
012 – 035
035 – 060
060 – 084
TUNING
PRESET
PRESET
Detail of Function
2.2 k Ω
3.3 k Ω
1.088 –
1.425 –
1.425 V
1.765 V
084 – 110
110 – 136
136 – 162
BASS
BASS
–
+
–
2.2 k Ω
3.3 k Ω
1.088 –
1.425 –
1.425 V
1.765 V
084 – 110
110 – 136
136 – 162
FM/AM
MEMORY
FM MODE
4.7 k Ω
7.5 k Ω
1.765 –
2.093 –
2.093 V
2.424 V
162 – 187
SELECT
PUSH –
RETURN
ENTER
(jog dial)
4.7 k Ω
7.5 k Ω
15 k Ω
1.765 –
2.093 –
2.424 –
2.093 V
2.424 V
2.770 V
162 – 187
187 – 214
SPEAKER
DISPLAY
A
47 k Ω
2.770 –
3.124 V
214 – 241
SPEAKER
B
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