BBK 9903S, Service Manual

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MT1379
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
Pin Number Symbol Type Description
181 SPDATA Input Audio data of SPDIF input /
Videoin Data PortB 5
182 DVDD2 Power 2.5V power pin for internal digital circuitry
183 SPLRCK Input Audio left/right channel clock of SPDIF input /
Videoin Data PortB 6
184 SPBCK Input Audio bit clock of SPDIF input /
Videoin Data PortB 7
185 DVDD3 Power 3.3V power pin for internal digital circuitry
186 XTALO Output Crystal output
187 XTALI Input Crystal input
188 PRST Input
PD, SMT
Power on reset input, active high
189 DVSS Ground Ground pin for internal digital circuitry
190 VFO13 Output The 1st, 3rd header VFO pulse output
191 IDGATE Output Header detect signal output
192 DVDD3 Power 3.3V power pin for internal digital circuitry
193 UDGATE Output DVD_RAM recording data gate signal output
194 WOBSI Input Wobble signal input
195 SDATA Output
196 SDEN Output RF serial data latch enable
197 SLCK Output RF serial clock output
198 BDO Input Flag of defect data input status
199 ADCVSS Ground Ground pin for ADC circuitry
200 ADIN Analog Input General A/D input
201 RFSUBI Analog Input RF subtraction signal input terminal
202 TEZISLV Analog Input Tracking error zero crossing low pass input
203 TEI Analog Input Tracking error input
204 CSO Analog Input Central servo input
205 FEI Analog Input Focus error input
206 RFLEVEL Analog Input Sub beam add input or RFRP low pass input
207 RFRP_DC A Input RF ripple detect input
208 RFRP_AC Analog Input RF ripple detect input (through AC coupling)
209 HRFZC Analog Input High frequency RF ripple zero crossing
210 PWMVREF A Input A reference voltage input for PWM circuitry. A typical value of 4.0 v
211 PWM2VREF A Input A reference voltage input for PWM circuitry. A typical value of 2.0 v
212 ADCVDD3 Power 3.3V power pin for ADC circuitry
213 RFDTSLVP Analog Output Positive RF data slicer level output
214 RFDTSLVN Analog Output Negative RF data slicer level output
215 RFIN Analog Input Negative input of RF differential signal
216 RFIP Analog Input Positive input of RF differential signal