Yamaha NS-BP300 Service Manual page 44

R-840/NS-BP300
Pin
Port Name
No.
82 P0_6/AN0_6/D6
83 P0_5/AN0_5/D5
84 P0_4/AN0_4/D4
85 P0_3/AN0_3/D3
86 P0_2/AN0_2/D2
87 P0_1/AN0_1/D1
88 P0_0/AN0_0/D0
89 P10_7/AN7/KI3
90 P10_6/AN6/KI2
91 P10_5/AN5/KI1
92 P10_4/AN4/KI0
93 P10_3/AN3
94 P10_2/AN2
95 P10_1/AN1
96 Avss
97 P10_0/AN0
98 Vref
99 Avcc
100 P9_7/ADTRG/SIN4
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
V 0 – 0.2
A/D value (5V=1023) 0 – 40
I-KEY0 (91 pin) PRESET UP
Destination detection for A/D port
Destination input (A/D) pull-up resistance 10 k-ohms
Ohm 1.2 k
V 0.2 – 1.0
A/D value (5V=1023) 40 – 205
DEST (81 pin)
44
Function Name
(P.C.B.)
MODEL AD AD
MVOL+ O O
MVOL- O O
0 O O
LED_EON O O
LED_STBY O O
LED_PWR O O
LED_PD O O
LED_TIMER O O
I_KEY0 AD O
I_CNTR AD O
I_LRBAL AD O
I_BAS AD O
I_TRE AD O
MG MCU MCU MCU
I_VOL AD O
VREF MCU MCU MCU
AVCC MCU MCU MCU
RDS_SDT SI O
0 +1.2 k +91 k
0.3 – 0.8 4.0 – 5.0
60 – 165 820 – 1023
PRESET DOWN PURE DIRECT
4.7 k
1.1 – 1.8 1.9 – 2.5
225 – 370 390 – 510
C V
I/O
O Model distinction
O Direction control of upside of MOTOR VOLUME
O Direction control of downside of MOTOR VOLUME
O
O EON LED control
STANDBY LED control
O
STANDBY = Hi (LED ON)
POWER ON LED control
O
POWER ON = Hi (LED ON)
PURE DIRECT LED control
O
PURE DIRECT = Hi (LED ON)
TIMER LED control
O
TIMER setting = Hi (LED ON)
O KEY AD value input
Reference value of AD uptake of TREBLE, BASS, LRBALANCE
O
Knob center value
O LRBALANCE knob position detection AD value input
O BASS knob position detection AD value input
O TREBLE knob position detection AD value input
O VOLUME position detection AD value input
O Serial data for RDS communication
6.8 k 15.0 k
2.6 – 3.2 3.3 – 3.8
530 – 655 675 – 780
T, K A
Detail of Function
24.0 k 47.0 k
3.9 – 4.3
800 – 880 900 – 985
B G
100.0 k
4.4 – 4.8
L