Yamaha CRX-E300 Service Manual page 32

CRX-E300
QQ
3 7 63 1515 0
IC201: M30217MAAFP (OPERATION P.C.B.)
No. PORT Name
23 P77 CCB
24 P76 CLK1
25 P75 RxD1
26 P74 TxD1
27 P73 SYSIN
28 P72 SYSO
29 P71 /MLD
30 P70 RONCE
31 P47 FROMBS
32 P46 FROMCLK
33 P45 FROMDI
34 P44 FROMDO
35 P43 FLD51
36 P42 DIG16
37 P41 DIG15
38 P40 DIG14
39 P37 DIG13
40 P36 DIG12
41 P35 DIG11
42 P34 DIG10
43 P33 DIG9
44 P32 DIG8
45 P31 DIG7
46 P30 DIG6
TE
L 13942296513
47 P27 DIG5
48 P26 DIG4
49 P25 DIG3
50 P24 DIG2
51 P23 DIG1
52 P22 SEG1
53 P21 SEG2
54 P20 SEG3
55 P17 SEG4
56 P16 SEG5
57 P15 SEG6
58 P14 SEG7
59 P13 SEG8
60 P12 SEG9
61 P11 SEG10
62 P10 SEG11
63 Vcc –
64 P07 SEG12
65 Vss –
66 P06 SEG13
67 P05 SEG14
68 P04 SEG15
69 P03 SEG16
70 P02 SEG17
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71 P01 SEG18
72 P00 SEG19
73 P57 SEG20
74 P56 SEG21 .
75 P55 SEG22
76 P54 SEG23
77 P53 SEG24
32
http://www.xiaoyu163.com
IN/OUT
O CCB (LC72131 / LC72720 / LC78211) CE OUT
O LC72131 / LC72720 / LC78211 CLK OUT
I LC72131 / LC72720 DATA IN
O LC72131 / LC72720 / LC78211 DATA OUT
I System Communication Input
O System Communication Output
O [CD] Microprocessor Command Store Request
O CE OUT to EEPROM
O Busy OUT from Built-in Flash ROM / Expansion Port (BU2092) Latch OUT
O CLK IN to Built-in Flash ROM / EEPROM / CLK OUT to BU2092
I DATA IN from Built-in Flash ROM / DATA IN from EEPROM
O DATA OUT to Built-in Flash ROM / EEPROM / DATA OUT to BU2092
I/O(POD)
I/O(POD) DIGIT 16
I/O(POD) DIGIT 15
I/O(POD) DIGIT 14
I/O(POD) DIGIT 13
I/O(POD) DIGIT 12
I/O(POD) DIGIT 11
I/O(POD) DIGIT 10
I/O(POD) DIGIT 9
I/O(POD) DIGIT 8
I/O(POD) DIGIT 7
I/O(POD) DIGIT 6
POD O DIGIT 5
POD O DIGIT 4
POD O DIGIT 3
POD O DIGIT 2
POD O DIGIT 1
POD O SEGMENT 1 (P1)
POD O SEGMENT 2 (P2)
POD O SEGMENT 3 (P3)
POD O SEGMENT 4 (P4)
POD O SEGMENT 5 (P5)
POD O SEGMENT 6 (P6)
POD O SEGMENT 7 (P7)
POD O SEGMENT 8 (P8)
POD O SEGMENT 9 (P9)
POD O SEGMENT 10 (P10)
POD O SEGMENT 11 (P11)
– Power Supply +5V
POD O SEGMENT 12 (P12)
– GND
POD O SEGMENT 13 (P13)
POD O SEGMENT 14 (P14)
POD O SEGMENT 15 (P15)
POD O SEGMENT 16 (P16)
POD O SEGMENT 17 (P17)
POD O SEGMENT 18 (P18)
POD O SEGMENT 19 (P19)
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POD O SEGMENT 20 (P20)
POD O i SEGMENT 21 (P21)
POD O SEGMENT 22 (P22)
POD O SEGMENT 23 (P23)
POD O SEGMENT 24 (P24)
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
[Back-up electrolytic capacitor for clock required]
co
.
9 4 2 8
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
0 5 8 2 9 9 4 2 8
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
[VEE external pull-down required]
m
9 9
9 9