Pioneer DV-285-S, Service Manual

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DV-285-S
66
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No. Pin Name I/O Pin Function No. Pin Name I/O Pin Function
1.8V Analog power
204
XTALO O 27M crystal out
XTALI I 27M crystal in
172
APLLCPA
–
3.3V power pin for audio clock circuitry
3.3V power pin for AUDIO DAC circuitry
JITFO O The output terminal of RF jitter meter
173
VREF
–
Bandgap reference voltage
JITFN I The input terminal of RF jitter meter
174
FS
–
Full scale adjustment
PLLVSS – Ground pin for data PLL and related analog circuitry
175 CVBS O Analog composite output
206
IDACEXLP O Data PLL DAC Low-pass filter
176
DACVSSC
–
Ground pin for VIDEO DAC circuitry
207
PLLVDD3 – Power pin for data PLL and related analog circuitry
177
R
208
LPFON O The negative output of loop filter amplifier
178
DACVDDB
–
3.3V power pin for VIDEO DAC circuitry
209
LPFIP I The positive input terminal of loop filter amplifier
179 G O
AUDIO DAC right channel output
While internal AUDIO DAC not used : GPO
210
211
212
213
214
LPFIN I The negative input terminal of loop filter amplifier
180
DACVSSB –
Ground pin for VIDEO DAC circuitry
LPFOP O The positive output of loop filter amplifier
181 B O
182
DACVDDA
–
I
–
–
3.3V power pin for VIDEO DAC circuitry
183 APLLVDD3
O
Video data output bit 4
Green or Y
184
DACVSSA –
Ground pin for VIDEO DAC circuitry
Ground pin for audio clock circuitry
Ground pin for AUDIO DAC circuitry
Analog ground
APLL External Capacitanace connection
185 APLLVSS
–
–
–
Video data output bit 5
Blue or CB
186
187
ADACVDD3
ADACGND
RFGND18
AR
O
Video data output bit 6
Red or CR
188 VCM –
AUDIO DAC reference voltage
189 AL O AUDIO DAC left channel output
While internal AUDIO DAC not used : GPO
192
193
194
195
196
197
198
199
190
191
RFVDD18
200
201
202
203
205
215 IREF I
Current reference input. It generates
reference current for RF path.
216 AVDD3
215 ACLK I/O Audio DAC master clock
216 DVSS – 1.8V Ground pin for internal digital circuitry
ADCVDD3 – Analog 3.3V Power for ADC
RFVDD3 – Analog Power
RFRPDC O
RF ripple detect output
RFRPAC I RF ripple detect input (through AC-coupling)
HRFZC I High frequency RF ripple zero crossing
ADCVSS – Analog ground for ADC
CRTPLP O Defect level filter capacitor connecting
RFGND – Analog Power
OSP O RF Offset cancellation capacitor connecting
OSN O RF Offset cancellation capacitor connecting
RFGC O RF AGC loop capacitor connecting for DVD-ROM
– Analog power 3.3V
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