Yamaha CRX-E150, Service Manual

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CRX-E150
CRX-E150
25
No. PORT Name IN/OUT Function
23 P77 CE OUT C2B(LC72131/LC72720/LC78211)CE OUT [1:DATA transmission]
24 P76 CLK S-CLK LC72131/LC72720/LC78211 CLK OUT (Serial I/O-1)
25 P75 DAT I S-IN LC72131/LC72720 DATA IN (Serial I/O-1)
26 P74 DAT O S-OUT LC72131/LC72720/LC78211 DATA OUT (Serial I/O-1)
27 P73 ST/MO IN STEREO/MONO IN (TUNER) [0:STEREO]
28 P72 Mut T OUT Tuner MUTE OUT (TUNER) [1:MUTE ON]
29 P71 Sta IN STATION IN (TUNER) [0:Station exists]
30 P70 CEO OUT CE OUT to EEPROM
31 P47 BUO OUT BUSY OUT from built-in flush ROM
[1:DATA transmission (EEPROM)]
32 P46 CLKO S-CLK CLK OUT from built-in flush ROM to CLK IN/EEPROM [Serial I/O-0]
33 P45 DATI S-IN DATA IN from DATA IN/EEPROM to built-in flush ROM [Serial I/O-0]
34 P44 DATO S-OUT DATA OUT from built-in flush ROM to DATA OUT/EEPROM [Serial I/O-0]
35 P43 HP IN Head phone detect IN [0:SP 1:HP]
36 P42 DIG 16 OUT DIGIT 16 (16G) [VEE external pull-down]
37 P41 DIG 15 OUT DIGIT 15 (15G) [VEE external pull-down]
38 P40 DIG 14 OUT DIGIT 14 (14G) [VEE external pull-down]
39 P37 DIG 13 OUT DIGIT 13 (13G) [VEE external pull-down]
40 P36 DIG 12 OUT DIGIT 12 (12G) [VEE external pull-down]
41 P35 DIG 11 OUT DIGIT 11 (11G) [VEE external pull-down]
42 P34 DIG 10 OUT DIGIT 10 (10G) [VEE external pull-down]
43 P33 DIG 9 OUT DIGIT 9 ( 9G) [VEE external pull-down]
44 P32 DIG 8 OUT DIGIT 8 ( 8G) [VEE external pull-down]
45 P31 DIG 7 OUT DIGIT 7 ( 7G) [VEE external pull-down]
46 P30 DIG 6 OUT DIGIT 6 ( 6G) [VEE external pull-down]
47 P27 DIG 5 OUT DIGIT 5 ( 5G) [VEE external pull-down]
48 P26 DIG 4 OUT DIGIT 4 ( 4G) [VEE external pull-down]
49 P25 DIG 3 OUT DIGIT 3 ( 3G) [VEE external pull-down]
50 P24 DIG 2 OUT DIGIT 2 ( 2G) [VEE external pull-down]
51 P23 DIG 1 OUT DIGIT 1 ( 1G) [VEE external pull-down]
52 P22 SEG 1 OUT SEGMENT 1 (P1) [VEE external pull-down]
53 P21 SEG 2 OUT SEGMENT 2 (P2) [VEE external pull-down]
54 P20 SEG 3 OUT SEGMENT 3 (P3) [VEE external pull-down]
55 P17 SEG 4 OUT SEGMENT 4 (P4) (VEE internal pull-down)
56 P16 SEG 5 OUT SEGMENT 5 (P5) (VEE internal pull-down)
57 P15 SEG 6 OUT SEGMENT 6 (P6) (VEE internal pull-down)
58 P14 SEG 7 OUT SEGMENT 7 (P7) (VEE internal pull-down)
59 P13 SEG 8 OUT SEGMENT 8 (P8) (VEE internal pull-down)
60 P12 SEG 9 OUT SEGMENT 9 (P9) (VEE internal pull-down)
61 P11 SEG 10 OUT SEGMENT 10 (P10) (VEE internal pull-down)
62 P10 SEG 11 OUT SEGMENT 11 (P11) (VEE internal pull-down)
63 VCC Vcc - Power 5V [Back-up capacitor]
64 P07 SEG 12 OUT SEGMENT 12 (P12) (VEE internal pull-down)
65 VSS Vss - GND
66 P06 SEG 13 OUT SEGMENT 13 (P13) (VEE internal pull-down)
67 P05 SEG 14 OUT SEGMENT 14 (P14) (VEE internal pull-down)
68 P04 SEG 15 OUT SEGMENT 15 (P15) (VEE internal pull-down)
69 P03 SEG 16 OUT SEGMENT 16 (P16) (VEE internal pull-down)
70 P02 SEG 17 OUT SEGMENT 17 (P17) (VEE internal pull-down)
71 P01 SEG 18 OUT SEGMENT 18 (P18) (VEE internal pull-down)
72 P00 SEG 19 OUT SEGMENT 19 (P19) (VEE internal pull-down)
73 P57 SEG 20 OUT SEGMENT 20 (P20) (VEE internal pull-down)
74 P56 SEG 21 OUT SEGMENT 21 (P21) (VEE internal pull-down)
75 P55 SEG 22 OUT SEGMENT 22 (P22) (VEE internal pull-down)
76 P54 SEG 23 OUT SEGMENT 23 (P23) (VEE internal pull-down)
77 P53 SEG 24 OUT SEGMENT 24 (P24) (VEE internal pull-down)
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