Yamaha A-S701 Service Manual page 30

A-S701
Pin Function Name
Port Name
No. （P.C.B.）
51 P4_3/A19 ISB
52 P4_2/A18 ISA
53 P4_1/A17 CD_LED
54 P4_0/A16 PD_LED
55 P3_7/A15 DIGITAL_PON
56 P3_6/A14 DSP_N_USB_ON
57 P3_5/A13 DIR_DSP_SEL
58 P3_4/A12 NC
59 P3_3/A11 NC
60 P3_2/A10 DSP_N_READY
61 P3_1/A9 DSP_MUTE_REQ
62 Vcc2 VCC
63 P3_0/A8 NC
6 4 V s s V S S
65 P2_7/AN2_7/A7 NC
66 P2_6/AN2_6/A6 PRE_N_MT
67 P2_5/INT7/AN2_5/A5 Z2_N_MT
68 P2_4/INT6/AN2_4/A4 DSP_N_INT_REQ
69 P2_3/AN2_3/A3 PRI
70 P2_2/AN2_2/A2 +5S_PON
71 P2_1/AN2_1/A1 DEST
72 P2_0/AN2_0/A0 MODEL
73 P1_7/INT5/D15 TU_GPIO
74 P1_6/INT4/D14 NC
75 P1_5/INT3/D13 PW_DET
76 P1_4/D12 DSP_N_RST
77 P1_3/TXD6/SDA6/D11 DSP_SDA
78 P1_2/RXD6/SCL6/D10 DSP_SCL
79 P1_1/CLK6/D9 TU_N_RST
80 P1_0/CTS6/RTS6/D8 PRY
81 P0_7/AN0_7/D7 SW_N_MT
82 P0_6/AN0_6/D6 PWR_MGT
83 P0_5/AN0_5/D5
THM2
84 P0_4/AN0_4/D4 THM1
85 P0_3/AN0_3/D3 BASS
86 P0_2/AN0_2/D2 TREBLE
87 P0_1/AN0_1/D1 BALANCE
88 P0_0/AN0_0/D0 LOUDNESS
89 P10_7/AN7/KI3 PRD
90 P10_6/AN6/KI2 AD_VOL
91 P10_5/AN5/KI1 VRUP
92 P10_4/AN4/KI0 VRDN
93 P10_3/AN3 PRV
94 P10_2/AN2 KEY1
95 P10_1/AN1 KEY0
96 Avss AVSS
97 P10_0/AN0 THM3
98 Vref VREF
99 Avcc AVCC
100 P9_7/ADTRG/SIN4 DIG_SW
30
I/O
I I I Encoder phase detection input/output for Input selector
I I I Encoder phase detection input/output for Input selector
I I I CD Direct LED control
O O O Pure Direct LED control
O O O Digital power supply 5V control signal of DIGITAL printed circuit boards
I O O Signal for USB insertion detection
O O O DIR, DSP select signal
O O O Free terminal
O O O Free terminal
I O O USB DSP GP6[0] operation status
I O O USB DSP GP6[1] mute request
MCU MCU MCU
O O O Free terminal
M C U M C U M C U
O O O Free terminal
I I O PRE OUT MUTE control
Low=MUTE ON
O I I ZONE2 MUTE control
Low=MUTE ON
IRQ IRQ IRQ Interrupt output from USB DSP GP6[7] USB DSP
AD AD AD AMP current protection
O O O +5S drive control
AD AD AD Destination discrimination AD value input
AD AD AD MODEL discrimination AD value input
IRQ IRQ IRQ TUNER GRIO interrupt input
Low=Normal Hi=Abnormal
- - - Free terminal
IRQ IRQ IRQ PW_DET detection interrupt input
O O O USB DSP reset terminal Reset USB DSP from microprocessor
SIO I I USB DSP control serial data
SO I I USB DSP control serial clock
O I I TUNER reset terminal
O I I Power relay control
O I I Subwoofer MUTE control
Low=MUTE ON
I I I Power management detection input
AD AD AD Right-hand side heat sinc temperature detection AD value input
AD AD AD Left-hand side heat sinc temperature detection AD value input
AD AD AD BASS position detection AD value input
AD AD AD TREBLE position detection AD value input
AD AD AD BALANCE position detection AD value input
AD AD AD LOUDNESS position detection AD value input
AD AD AD DC protection detection
AD AD AD VOLUME position detection AD value taken input
O O O MOTOR VOLUME +direction control
O O O
MOTOR VOLUME -direction control
AD AD AD Protection voltage detection AD value taken input
AD AD AD KEY1 AD value input (SPEAKER SELECT SW)
AD AD AD KEY0 AD value input (CD DIRECT SW/PURE DIRECT SW)
MCU MCU MCU
AD AD AD For Diode Bridge temperature detection of Main Amp
MCU MCU MCU
MCU MCU MCU
I I I DIG_SW input
Detail of Function