Yamaha YHT-196 Service Manual page 60

HTR-2064/NS-B20/NS-C20/NS-SWP20
Function
P i n
Port Name Name
No.
(P.C.B.)
94 AVSS AVSS
95 AN0 IPD_TYPE
96 VREF VREF
97 AVCC AVCC
98 SIN4 E2R_MISO
99 SOUT4 FLD_MOSI
100 CLK4 FLD_SCK
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm 0
Normal voltage
0 – 0.15
value range
A/D value range
0 – 11
(3.3 V=255)
Key name
STRAIGHT
(KEY1, 92 pin)
Ohm 0
Normal voltage
0 – 0.15
value range
A/D value range
0 – 11
(3.3 V=255)
Key name SCENE
(KEY2, 91 pin) RADIO
60
Full on Power off MCU sleep
MCU MCU
AD I
AD standby AD standby AD standby
MCU MCU
MCU MCU
SI SI
SO SO
SO SO
+ 1.0 k + 1.5 k + 1.8 k
0.15 – 0.48 0.49 – 0.82 0.83 – 1.14 1.15 – 1.46 1.47 – 1.79 1.80 – 2.12 2.13 – 2.40 2.41 – 2.91
12 – 37 38 – 64 65 – 88
TUNING
MUTE FM MODE
>>
+ 1.0 k + 1.0 k + 1.5 k
0.15 – 0.42 0.43 – 0.70 0.71 – 0.97 0.98 – 1.24 1.25 – 1.53 1.54 – 1.84 1.84 – 2.10 2.11 – 2.33 2.34 – 2.54 2.54 – 2.71
12 – 32 33 – 54 55 – 75
SCENE SCENE SCENE
CD TV BD/DVD
AC off
MCU MCU Microprocessor GND
I I
DOCK discriminate
MCU MCU AD reference voltage
MCU MCU Microprocessor power supply
O SI Synchronous data input for EEPROM
O SO
FL driver/Synchronous data output for EEPROM
Low Fix
O SO
FL driver/Synchronous clock output for EEPROM
Low Fix
+ 2.2 k + 3.3 k + 4.7 k
89 – 113 114 – 139 140 – 164
TUNING PRESET PRESET
<< > <
+ 1.5 k + 2.2 k + 3.3 k
76 – 96 97 – 119 120 – 142
PROGRAM PROGRAM INPUT
> < >
Detail of Function
+ 8.2 k + 10.0 k
165 – 186 187 – 226
MEMORY INFO
+ 4.7 k (22 k + 33 k) 22.0 k
143 – 163 164 – 181 182 – 197
INPUT
–
< (Power)
33.0 k
198 – 209
TONE
CONTROL