17
MV-900SDS
SERVO BOARD U1 M5705 (DVD/CD DIGITAL SIGNAL PROCESSOR)
Pin No.
Pin Name
I/O
Description
1
AVSS_DS
—
Ground terminal
2
XSRFIN
I
DVD/CD RF signal input terminal
3
XSIPIN
I
Inverting input terminal of data slicer
4
AVDD5_DS
—
Power supply terminal (+5V)
5
XSDSSLV
O
Slice level output terminal
6
XSRSLINT
I
Reference current setting terminal for analog data slicer
7
VDD
—
Power supply terminal (+3.3V)
8
XSAWRC
O
Enlarge signal output for VCO range
9
XSRFGC
O
RF gain control signal output for loading motor drive
10
XSEFGC
O
EF gain control signal output terminal Not used
11
XSFOCUS
O
Output voltage level control signal output for focus coil drive
12
XSTRACK
O
Output voltage level control signal output for tracking coil drive
13
XSSLEG
O
Output voltage level control signal output for sled motor drive
14
AVDD5_DA
—
Power supply terminal (+5V)
15
XSMOTOR
O
Output voltage level control signal output for spindle motor drive
16
AVSS_DA
—
Ground terminal
17
XSRFRPLP
I
High bandwidth low pass filter input for RFRP
18
XSTELP
I
High bandwidth low pass filter input for tracking error
19
XSREF2
I
Reference voltage input terminal (+2.1V)
20
XSRFRP
I
RF ripple/envelope signal input terminal
21
XSTEXI
I
Tracking zero crossing signal input terminal
22
AVSS_AD
—
Ground terminal
23
XSTEI
I
Tracking error signal input terminal
24
XSFEI
I
Focus error signal input terminal
25
XSCEI
I
Center error signal input terminal
26
AVDD5_AD
—
Power supply terminal (+5V)
27
XSSBAD
I
Sub-beam addition signal input terminal
28
GND
—
Ground terminal
29
XSDFCT
I
Detect defection signal input terminal
30
XSCSJ
O
Chip select signal output for accessing control registers
31
XSCLK
O
Clock signal output for accessing control registers
32
XSDATA
I/O
Registers data input/output terminal
33
XSLDC
O
Standby on/off signal output to the coil/motor driver
34
XSFGIN
I
Motor hall sensor input terminal
35
XSSPDON
O
Spindle motor on/off control signal output terminal
36 to 39
XSFLAG3 to
XSFLAG0
O
Monitoring terminal for servo control block Not used
40
XMP1_7
I
Detection signal input from the disc in detect sensor
41
XMP1_6
I
Detection signal input from the limit switch
42
GND
—
Ground terminal
43
XMP1_5
I/O
Not used
44
XMP1_4
I
Detection signal input from the disc out detect sensor
45
XMP1_3
I
Detection signal input from the close end switch
46
XMFSCSJ
O
Chip select signal output to the flash memory
47
XMP1_2
I/O
Not used
48
XGPIO2
O
Laser diode on/off control signal output to the RF amplifier
•
IC Pin Function Description
Summary of Contents for MV-900SDS - Dream System 3
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