Ic401 System Control (Mb90677) - Sony CDP-CX90ES Service Manual

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• IC401 SYSTEM CONTROL (MB90677)

Pin No. Pin Name
1 A16
2 A17
3 CE1
4 CE2
5 ADJ
6 AF ADJ
7 ––
8 ––
9 ALE
10 OE
11 DGND
12 WE
13 ––
14 SPDT
15 CLK-T
16 XMODE
17 XLT
18 K. DATA-I
19 K. DATA-O
20 K. CLK-O
TE
L 13942296513
21 ––
22 DATA
23 DVDD
24 CLK
25 TBLL
26 AMUTE
27 TBLR
28 ––
29 PGM. LT
30 LDON
31 SENSE
32 SUBQ
33 SQCK
34 AVCC
35 AVR +
36 AVR –
37 AVss
38 KEY0
39 KEY1
40 KEY2
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I/O
Address terminal for external RAM/ROM
O
Chip select
O
Chip select
O
Chip select
O
ADJ mode input pin
I
AFADJ mode input pin
I
Open
O
Open
O
Address latch enable
O
Lower during read
O
Digital ground
–
Write signal of data bus low order 8 bit
I
Open
O
Data input from IC for CD-TEXT (LC89170M)
I
Clock output to IC for CD-TEXT (LC89170M)
O
Reset output to IC for CD-TEXT (LC89170M)
O
Latch output to CXD2545
O
Keyboard data input
I
Keyboard data output
O
Keyboard clock output
O
Connected to Ground
O
Data output for D/F pin of CXD2545
O
5V power supply
–
5V power supply clock output
O
Table motor output for left tern
O
Audio mute output
O
Table motor output for right tern
O
Open
O
Latch output
O
Laser diode on
O
Sense input from CXD2545
I
Sub code Q data input
I
Sub code Q data read-out clock
O
Analog power supply (Connected to +5V)
–
Analog reference voltage input (Connected to +5V)
–
Analog reference voltage input (Connected to ground)
–
Analog ground
–
Key input
I
Key input
I
Key input
I
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
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