26
CDP-CE275/CE375
6-10.
IC PIN FUNCTION DESCRIPTION
• BD BOARD IC101 CXD2587Q
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, DIGITAL FILTER, D/A CONVERTER)
Pin No.
Pin Name
I/O
Description
1
SQSO
O
Subcode Q data output to the system controller (IC301)
2
SQCK
I
Subcode Q data reading clock signal input from the system controller (IC301)
3
XRST
I
System reset signal input from the system controller (IC301) “L”: reset
4
SYSM
I
Analog line muting on/off control signal input terminal “H”: line muting on
Not used (fixed at “L”)
5
DATA
I
Command serial data input from the system controller (IC301)
6
XLAT
I
Command latch pulse input from the system controller (IC301)
7
CLOK
I
Command serial data transfer clock signal input from the system controller (IC301)
8
SENS
O
Internal status monitor output to the system controller (IC301)
9
SCLK
I
SENSE serial data reading clock input from the system controller (IC301)
10
VDD
—
Power supply terminal (+5V) (digital system)
11
ATSK
I/O
Input pin for anti-shock Not used (fixed at “L”)
12
SPOA
I
Microcomputer escape interface input A terminal Not used (fixed at “L”)
13
SPOB
I
Microcomputer escape interface input B terminal Not used (fixed at “L”)
14
XLON
O
Microcomputer escape interface output to the CXA2568M (IC103)
15
WFCK
O
WFCK output terminal Not used (open)
16
XUGF
O
Not used (open)
17
XPCK
O
Not used (open)
18
GFS
O
Not used (open)
19
C2PO
O
Not used (open)
20
SCOR
O
Subcode sync (S0+S1) detection signal output to the system controller (IC301)
21
COUT
I/O
Numbers of track counted signal input/output terminal Not used (open)
22
MIRR
I/O
Mirror signal input/output terminal Not used (open)
23
DFCT
I/O
Defect signal input/output terminal Not used (open)
24
FOK
I/O
Focus OK input/output terminal Not used (open)
25
LOCK
I/O
GFS is sampled by 460 Hz “H” when GFS is “H” Not used (open)
26
MDP
O
Spindle motor (M101) servo drive signal output to the BA5974FP (IC102)
27
SSTP
I
Limit in detect switch (S101) input terminal
28
SFDR
O
Sled servo drive PWM signal (+) output to the BA5974FP (IC102)
29
SRDR
O
Sled servo drive PWM signal (–) output to the BA5974FP (IC102)
30
TFDR
O
Tracking servo drive PWM signal (+) output to the BA5974FP (IC102)
31
TRDR
O
Tracking servo drive PWM signal (–) output to the BA5974FP (IC102)
32
FFDR
O
Focus servo drive PWM signal (+) output to the BA5974FP (IC102)
33
FRDR
O
Focus servo drive PWM signal (–) output to the BA5974FP (IC102)
34
VSS
—
Ground terminal (digital system)
35
TEST
I
Input terminal for the test (fixed at “L”)
36
TES1
I
Input terminal for the test (fixed at “L”)
37
XTSL
I
Input terminal for the system clock frequency setting “L”: 45.1584 MHz, “H”: 22.5792 MHz
(fixed at “L” in this set)
38
VC
I
Middle point voltage (+2.5V) input from the CXA2568M (IC103)
39
FE
I
Focus error signal input from the CXA2568M (IC103)
40
SE
I
Sled error signal input from the CXA2568M (IC103)
41
TE
I
Tracking error signal input from the CXA2568M (IC103)
42
CE
I
Command chip enable signal input from the CXA2568M (IC103)
