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IC, CXP81952M-552R
Pin No.
Pin Name
1
MCAS
2
MRAS
3
BUP
4
AMUTE
5
ESK
6
EDO
7
EDI
8
ECS
9
NC
10
RFLCT
11
NC
12
LS
13
LDSW
14
PBSW
15
RECSW
16
NC
17
NC
18
ACOFF
19
SREQ
20
EXTDIN
21
SLOW
22
LOAD
23
EJECT
24
MREQ
25
DRIVE
26
NC
27
NC
28
NC
29
NC
30
NC
31
NC
32
NC
33
NC
34
NC
35
NC
36
NC
37
MP
38
SRST
39
DGND
40
XTALO
41
XTALI
I/O
—
—
Not used.
—
O
Audio mute signal output.
O
Serial clock output for EEPROM interface.
O
Serial data output for EEPROM interface.
I
Serial data input for EEPROM interface.
O
EEPROM chip select signal output.
—
Not used.
I
Input from disc reflectance detection switch.
—
Not used.
I
Input signal from pickup inner circumference detect switch.
I
Input signal from loading mechanism EJECT position detect switch.
—
Not used.
I
Input signal from loading mechanism REC position detect switch.
—
—
Not used.
—
I
System control send request input signal for system control interface.
O
External DIGITAL-IN permission output signal.
O
Speed control signal output to loading mechanism.
O
Movement direction control signal output-1 to loading mechanism.
O
Movement direction control signal output-2 to loading mechanism.
O
MD controller send request output signal for system control interface.
O
EFM driver ON/OFF output signal.
—
—
—
—
—
—
Not used.
—
—
—
—
—
—
Connected to VSS.
I
MD controller reset signal input.
—
Connected to VSS.
O
External crystal connection terminal-1 for system clock oscillation.
I
External crystal connection terminal-2 for system clock oscillation.
26
Description
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