Onkyo DV-SP303 Service Manual page 48

IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
No. Pin Name I/O
189 DACVDDC –
190 VREF –
191 FS –
192 YUV0 O
193 DACVSSC –
194 YUV1 O
195 DACVDDB –
196 YUV2 O
197 DACVSSB –
198 YUV3 O
199 DACVDDA –
200 YUV4 O
201 DACVSSA –
202 YUV5 O
203 YUV6 O
204 DVDD3 –
205 VSYN I/O
206 YUV7 I/O
207 HSYN I/O
208 SPMCLK I/O
209 SPDATA I/O
210 SPLRCK I/O
211 SPBCK I/O
212 DVDD3 –
Pin Function
3.3V power pin for VIDEO DAC circuitry
Bandgap reference voltage
Full scale adjustment
Video data output bit 0
Compensation capacitor
Ground pin for VIDEO DAC circuitry
Video data output bit 1
Analog Y output
3.3V power pin for VIDEO DAC circuitry
Video data output bit 2
Analog chroma output
Ground pin for VIDEO DAC circuitry
Video data output bit 3
Analog composite output
3.3V power pin for VIDEO DAC circuitry
Video data output bit 4
Green or Y
Ground pin for VIDEO DAC circuitry
Video data output bit 5
Blue or CB
Video data output bit 6
Red or CR
3.3V power pin Video DAC digital circuitry only
Vertical sync input/output
While no External TV-encoder:
Vertical sync for video-input
Version AD input port 1
GPIO
Video data output bit 7
While no External TV-encoder:
Microcontroller external interrupt 3
Audio serial data 5 part II:DSD data sub-
woofer channel or Microphone output
GPIO
Horizontal sync input/output
While no External TV-encoder:
Horizontal sync for video-input
Microcontroller external interrupt 4
Version AD input port 2
GPIO
Audio DAC master clock of SPDIF input
While SPDIF input is not used:
Serial interface port 0 clock pin
GPIO
Audio data of SPDIF input
While SPDIF input is not used:
Serial interface port 0 data-in
GPIO
Audio left/right channel clock of SPDIF input
While SPDIF input is not used:
Serial interface port 0 data-out
GPIO
Audio bit clock of SPDIF input
While SPDIF input is not used:
Serial interface port 0 chip select
Audio serial data 5 part I:DSD data sub-
woofer channel or Microphone output
GPIO
3.3V power pin for internal digital circuitry
No. Pin Name I/O
Audio left/right channel clock
213 ALRCK I/O
Trap value in power-on reset:
1:use external 373
0:use internal 373
214 ABCK O Audio bit clock
Phase de-modulation
215 ACLK I/O Audio DAC master clock
216 DVSS – 1.8V Ground pin for internal digital circuitry
217 ASDATA0 I/O
Audio serial data 0 (Front-Left/Front-Right)
DSD data left channel
Trap value in power-on reset:
1:manufactory test mode
0:normal operation
Audio serial data 1 (Left-Surround/Right-Surround)
218 ASDATA1 I/O
DSD data right channel
Trap value in power-on reset:
1:manufactory test mode
0:normal operation
While only 2 channels output:
GPO
Audio serial data 2 (Center/LFE)
219 ASDATA2 I/O
DSD data left surround channel
Trap value in power-on reset:
1:manufactory test mode
0:normal operation
While only 2 channels output:
GPO
220 ASDATA3 I/O Audio serial data 3 (Center-back/Center-left-
back/Center-right-back, in 6.1 or 7.1 mode)
DSD data right surround channel
Trap value in power-on reset:
1:manufactory test mode
0:normal operation
While only 2 channels output:
GPIO
221 DVDD18 – 1.8V power pin for internal digital circuitry
222 ASDATA4 I/O Audio serial data 4 (Down-mixed Left/Right)
DSD data center channel
Trap value in power-on reset:
1:manufactory test mode
0:normal operation
While only 2 channels output:
Microcontroller external interrupt 1
GPIO
223 DVSS – 3.3V Ground pin for internal digital circuitry
224 MC_DATA I/O Microphone serial input
While not support Microphone:
Microcontroller external interrupt 2
GPIO
225 SPDIF O SPDIF output
226 RFGND18 – Analog ground
227 RFVDD18 – Analog power 1.8V
228 XTALO O 27M crystal out
229 XTALI I 27M crystal in
230 JITFO O The output terminal of RF jitter meter
231 JITFN I The input terminal of RF jitter meter
232 PLLVSS – Ground pin for data PLL and related analog circuitry
233 IDACEXLP O Data PLL DAC Low-pass filter
234 PLLVDD3 – Power pin for data PLL and related analog circuitry
235 LPFON O The negative output of loop filter amplifier
236 LPFIP I The positive input terminal of loop filter amplifier
237 LPFIN I The negative input terminal of loop filter amplifier
238 LPFOP O The positive output of loop filter amplifier
DV-SP303
Pin Function