MT1379
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE
MTK CONFIDENTIAL, NO DISCLOSURE
P
I N
D
EFINITIONS
Pin Number
Symbol
Type
Description
1
IREF
Analog Input
Current reference input. It generates reference current for data
PLL.
Connect an ext ernal 100K resistor to this pin and PLLVSS.
2
PLLVSS
Ground
Ground pin for data PLL and related analog circuitry
3
LPIOP
Analog Output Positive output of the low pass filter
4
LPION
Analog Output Negative output of the low pass filter
5
LPFON
Analog output Negative output of loop filter amplifier
6
LPFIP
Analog Input
Positive input of loop filter amplifier
7
LPFIN
Analog Input
Negative input of loop filter amplifier
8
LPFOP
Analog Output Positive output of loop filter amplifier
9
JITFO
Analog Output RF jitter meter output
10
JITFN
Analog Input
Negative input of the operation amplifier for RF jigger meter
11
PLLVDD3
Power
3.3V power pin for data PLL and related analog circuitry
12
FOO
Analog Output Focus servo output. PDM output of focus servo compensator
13
TRO
Analog Output Tracking servo output. PDM output of tracking servo compensator
14
TROPENPWM Analog Output Tray open output, controlled by microcontroller.
This is PWM output for TRWMEN27hRW2=1 or is digital output for
TRWMEN27hRW2=0
15
PWMOUT1
Analog Output The 1st general PWM output
16 PWMOUT2 Analog Output
17
DVDD2
Power
2.5V power pin for internal fully digital circuitry
18
DMO
Analog Output Disk motor control output. PWM output
19
FMO
Analog Output Feed motor control. PWM output
20
DVSS
Ground
Ground pin for internal fully digital circuitry
21
FG
Input
Motor Hall sensor input
22
HIGHA0
Inout
2~16MA, SR
PU
Microcontroller address 8
23
HIGHA1
Inout
2~16MA, SR
PU
Microcontroller address 9
24
HIGHA2
Inout
2~16MA, SR
PU
Microcontroller address 10
25
HIGHA3
Inout
2~16MA, SR
PU
Microcontroller address 11
26
HIGHA4
Inout
2~16MA, SR
PU
Microcontroller address 12
27
HIGHA5
Inout
2~16MA, SR
PU
Microcontroller address 13
28
DVSS
Grou nd
Ground pin for internal digital circuitry
The 2nd general PWM output
21
Summary of Contents for DVD53
Page 1: ...OPEN CLOSE PREV NEXT PLAY PAUSE STOP POWER SERVICE MANUAL DVD53 55 ...
Page 45: ...FRONT SCHEMATIC DIAGRAM 43 ...
Page 47: ...POWER BOARD SCHEMATIC DIAGRAM 45 ...
Page 49: ...OUTPUT BOARD SCHEMATIC DIAGRAM 47 ...
Page 54: ...MIAN SCHEMATIC DIAGRAM 52 ...
Page 55: ...MIAN SCHEMATIC DIAGRAM 53 ...