Yamaha CRX-E150 Service Manual page 24

CRX-E150
QQ
3 7 63 1515 0
No. Port Name
56 P00 MUTE
57 P27
58 P26
59 P25
60 P24
61 P23
62 P22
63 P21
64 P20
65 P57 SQCK
66 P56 MCLK
67 P55 SOUT
68 P54 SIN
69 P53 SBCK2
70 P52 /DCLK
71 P51 DSO
72 P50 SUBC
73 AVSS AVSS
74 VREF VREF
75 P65 SYSOUT
76 P64
77 P63 /SYS
78 P62 /TXT
79 P77 /CMDSEL
80 P76 /OSEL
TE
L 13942296513
IC201 : BU2090F
Serial In/Parallel Out Driver
IC201 : BU2090F
Pin Description
No. Name
1 VSS
2 DATA
3 CLOCK
CD µ-com reset out
4 Q0
5 Q1 Timer LED out
6 Q2 Stand-by LED out
7 Q3 Motor VR down out
8 Q4 Motor VR up out
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9 Q5 Power relay (Power ON) out
10 Q6 Speaker relay out
11 Q7
.
12 Q8
13 Q9
14 Q10
15 Q11
16 VDD
23
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I/O
Line Mute
[NC]
[NC]
[NC]
[NC]
[NC]
[NC]
[NC]
[NC]
O Serial clock to servo LSI (Qcode)
O Serial clock to servo LSI (Command)
O Serial out to servo LSI (Command)
I Serial in from servo LSI (Qcode, SENSE)
O Serial clock to servo LSI (CD = Text)
I Serial clock from system ucom (display data auto transmission)
Serial data to system µ-com (Display data)
O
I Serial in from servo LSI (CD-TEXT)
[GND]
+5V
O System command out
I System command in
Serial 1 → RCV system transmission
O
Serial 1 → CD-Text reading
O
Serial 2 → µ-com command
O
Serial 2 → Q-code reading
O
Vss 1
DATA 2
CLOCK 3
Q0 4
Q1 5
Q2
6
Q3 7
Q4
8
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
16 VDD
15 Q11
Logic
14 Q10
13 Q9
12 Q8
Q7
11
10 Q6
Q5
9
Function
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
[0: RESET]
[0: ON, 1: OFF]
[0: ON, 1: OFF]
[1: DOWN]
[1: UP]
m
[0: ON, 1: OFF]
[0: ON, 1: OFF]
9 9
9 9