Yamaha RX-V320, Service Manual

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26
RX-V320
* Video input
Selector
Control
(H=High,
L=Low)
Video Input SW1 SW2 SW3
(Pin4) (Pin5) (Pin6)
VCR H L H
SAT/D-TV H H L
DVD/LD L H L
V-AUX L L L
IC107 : BU2090
Serial Input/Parallel Output Driver for Output port expansion
P i n P i n
P o r t I / O Function
N o . N a m e
67 P05/FL21 P1 O Segment 1 for FL display
68 P04/FL20 P2 O Segment 2 for FL display
69 P03/FL19 P3 O Segment 3 for FL display
70 P02/FL18 P4 O Segment 4 for FL display
71 P01/FL17 P5 O Segment 5 for FL display
72 P00/FL16 P6 O Segment 6 for FL display
73 P57/FL15 P7 O Segment 7 for FL display
74 P56/FL14 P8 O Segment 8 for FL display
75 P55/FL13 P9 O Segment 9 for FL display
76 P54/FL12 P10 O Segment 10 for FL display
77 P53/FL11 P11 O Segment 11 for FL display
78 P52/FL10 P12 O Segment 12 for FL display
79 P51/FL09 P13 O Segment 13 for FL display
80 P50/FL08 P14 O Segment 14 for FL display
81 P67/FL07 P15 O Segment 15 for FL display
82 P66/FL06 P16 O Segment 16 for FL display
83 P65/FL05 P17 O Segment 17 for FL display
84 P64/FL04 P18 O Segment 18 for FL display
Pin Pin
Port I/O Function
No. Name
85 P63/FL03 P19 O Segment 19 for FL display
86 P62/FL02 P20 O Segment 20 for FL display
87 P61/FL01 P21 O Segment 21 for FL display
88 P60/FL00 P22 O Segment 22 for FL display
89 VEE VP O Power supply for FL display
90 P107/AN7 LIMDT I Limitter DC detect input
91 P106/AN6 PRV I PS (power voltage) protection
AD value detect input
92 P105/AN5 PRD I DC (power amp voltage) protection
AD value detect input
93 P104/AN4 METER I Tuner meter AD value input
94 P103/AN3 NC O No connection
95 P102/AN2 /FMT O Full mute output (L: ON)
96 P101/AN1 KEY2 I Key 2 AD data value input
97 AVSS MG Ground
98 P100/AN0 KEY1 I Key 1 AD data value input
99 VREF +5M Standard power supply for AD input
100 AVCC +5BU +5V power supply
Pin Pin
Port I/O Function
No. Name
1 VSS VSS Ground
2 DATA DTB I Control data input
3 CLOVK CKB I Control clock input
4 Q0 SW1 O Video select data
5 Q1 SW2 O output 1-3(*)
6 Q2 SW3 O
7 Q3 SW4 O Video select data Unconnected
8 Q4 SW5 O output 4,5
9 Q5 /CONT1 O Limitter control data output 1,2
10 Q6 /CONT2 O
11 Q7 /-10dB O –10dB control data output
(L : –10dB)
12 Q8 6ch GAIN O 6-ch gain control data output (L:6-ch)
13 Q9 /C-MUTE O Center mute data output (L:Mute on)
14 Q10 /SW-MUTE O Subwoofer mute data output (L:Mute on)
15 Q11 /T-MUTE O Tuner mute data output (L : Mute on)
16 VDD VDD +5V power supply
2
1
3
4
5
6
7
8
15
16
14
12
12
11
10
9
VSS
DATA
CLOCK
Q0
Q1
Q2
Q3
Q4
VDD
Q11
Q10
Q9
Q8
Q7
Q6
Q5
OUTPUT B
UFFER
(OPEN DRAIN)
LA
TCH
CONTROL
LOGIC
12-Bit SHIFT REGISTER
(TOP VIEW)
IC501 : M30217MA-A205FP
16-bit Microcomputer
from
microcomputer
for
video input
selector
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