Onkyo A-5VL Service Manual page 30

MICROPROCESSOR BLOCK DIAGRAM
SELECTOR
Detect Volume
position
MotorVolume
TA72915
BASS
TREBLE
BALANCE
TONE/DIRECT
POWER ON/OFF
REMOCON
RI in
RI out
Select SP,
A, B, A+B, OFF
Select power supply
synchronization mode
Initialization
Select BTL
Setting 12V trigger time
Detect headphone
Detect 12V trigger
Detect protect
Detect SP load (Lch)
Detect SP load (Rch)
Detect power failure
Detect temperature
Detect IPM
IPM sensitivity switch
OSC
6MHz
64PIN
SELECTOR_SW 50 AD
VOL_POS 51 AD
VOL_UP 22
VOL_DOWN 23
BASS_IN 48 AD
TREBLE_IN 47 AD
BLANCE_IN 46 AD
DIRECT_KEY 14
POWER_KEY 15
1
REMIN
33
SYSIN
SYSOUT 34
SPEAKER_SW 49 AD
PWR_MODE 54 AD
58 AD
MODEL
HP_DET 39
PROTECT 56
POFF 55
THERMAL 57 AD
IPM DET 52 AD
IPM_SENS 53 AD
Xin 9
Xout 7
VCC/AVCC/VREF 10,62,61
VSS/AVSS 8,59
RESET 6
ROM 84K
35 SEL_DATA Selector, Volume IC
36 SEL_CLK
R2S15211FP
19 TONE_LED
Tone
20 DIRECT_LED
Direct
21 MUTING_LED
Audio mute
18 STBY_LED
Standby
Digital lock
16 LOCKED_LED
Power
17 POWER_LED
12V Trigger output
Bit select control
Line out control
Headphone mute
40 HP_MUTE
Digital control
42 DG_MUTE
Audio mute control
41 AMUTE
SP A reray control
64 SPA_RL
SP B reray control
63 SPB_RL
SP A load control
SP A load control
43 ACPOWER Main power Voltage control
Initial current control
28 DIR_SDI DIR AK4112B
27 DIR_SDO
26 DIR_CLK
25 DIR_CS
24 DIR_RST
EEPROM
36 ROM_SCL
35 ROM_SDA S24CS16A
3 MODE
Write Flash ROM control
45 DAC1_CS DAC
44 DAC2_CS
60 DAC_RST
32 SP_DIF
A-5VL