Yamaha RX-V771, Руководство по обслуживанию

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IC89: SN74LV4051APWR (DIGITAL P.C.B.)
8-channel analog multiplexers/demultiplexers
Pin
No.
Port Name Function Name
Related Power Supply
Detail of Function ON OFF
I/O Logic I/O Logic
AD selector 1 (AD1_COM signal is inp u t into AN_5 of R32C)
1 Y4 PS2_PRT I A/D I --- Power s u pply protection 2
2 Y6 PS1_PRT I A/D I --- Power s u pply protection 1
4 Y7 AMP_OLV I A/D I --- Amplifier o u tp u t level detection
5 Y5 DC_PRT I A/D I --- DC protection
12 Y3 THM1 I A/D I --- Temperat u re detection 1
13 Y0 DK1_ID I A/D I --- Dock ID detection
14 Y1 L3_DET I A/D I --- D terminal L3 detection
15 Y2 MODE I A/D I --- Special mode distinction
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
COM
INH
C
B
A
11
10
9
6
3
13
14
15
12
1
5
2
4
1
2
3
4
5
6
7
8 9
10
16
15
14
13
12
11
Y4
Y6
COM
Y7
Y5
INH
GND
GND
V
CC
Y2
Y1
Y0
Y3
A
B
C
INPUTS
ON
CHANNEL
INH
L
L
L
L
L
L
L
L
H
L
L
L
H
H
H
H
X
C
L
L
H
H
L
L
H
H
X
L
H
L
H
L
H
L
H
X
L
Y1
Y2
Y3
Y4
Y5
Y6
Y7
None
Y0
B A
DOCK type Bl u etooth Wireless iPod iPod
No connected
(DKID 13 pin) (YBA-10) (YID-W10) (YDS-10/11/12(B
*
)) (YDS-12(A
*
))
A/D val u e
(3.3 V=255)
5 – 25 85 – 100 120 – 140 150 – 170 255
DOCK detection for AD port
P
u ll- u p resistance 10 k-ohms
*
Mode switch setting of the YDS-12
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RX-V771
RX-V771