Akai ADP-841, Service Manual

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MT1389 B/ C
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
3
MTK Confidential A
FOR SZ_MTK USE ONLY
Pin Main Alt. Type Description
233 IDACEXLP Analog output Data PLL DAC Low-pass filter
234 PLLVDD3 Power Power pin for data PLL and related analog circuitry.
235 LPFON Analog Output The negative output of loop filter amplifier
236 LPFIP Analog Input The positive input terminal of loop filter amplifier.
237 LPFIN Analog Input The negative input terminal of loop filter amplifier.
238 LPFOP Analog Output The positive output of loop filter amplifier
Motor and Actuator Driver Interface ( 10 )
34 OP_OUT Analog output Op amp output.
35 OP_INN Analog input Op amp negative input
36 OP_INP Analog input Op amp positive input
37 DMO Analog Output Disk motor control output. PWM output.
38 FMO Analog Output Feed motor control. PWM output.
39
TROPENPW
M
Analog Output Tray PWM output / Tray open output.
40 PWMOUT1 V_ADIN9 Analog Output
1) 1
st
General PWM output, or
2) Version AD input 9
41 TRO Analog Output
Tracking servo output. PDM output of tracking servo
compensator.
42 FOO Analog Output Focus servo output. PDM output of focus servo compensator
47
FG
(Diogital pin)
V_ADIN8
LVTTL 3.3V Input,
Schmitt Input, pull
up , with analog
input path for
V_ADIN8
1) Motor Hall sensor input, or
2) Version AD input 8
General Power/Ground ( 32 )
52,97,
122,152,173,
221
DVDD18 Power 1.8V power pin for internal digital circuitry
43 ,
85,116,144,
163,216
DVSS Ground 1.8V Ground pin for internal digital circuitry
46 ,
73,80,108,
127,141,155,
167,182,212
DVDD3 Power 3.3V power pin for internal digital circuitry
62,94,119,
134,148,161,
223
DVSS Ground 3.3V Ground pin for internal digital circuitry
204 DVDD3 Power 3.3V power pin Video DAC digital circuitry only
63 APLLCAP Analog Inout APLL External Capacitance connection
64 APLLVSS Ground Ground pin for audio clock circuitry
65 APLLVDD3 Power 3.3V Power pin for audio clock circuitry
175 NC