BBK Dk960S, Service Manual

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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