Universum FT-81031, Service Manual

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6
Pinning:
1. ADR wordstrobe 35. Analog Shield Ground 1
2. Not connected 36. Scart input 3 in right
3. ADR data output 37. Scart input 3 in left
4. I²S 1 data input 38. Analog Shield Ground 4
5. I²S data output 39. Scart input 4 in, right
6. I²S wordstrobe 40. Scart input 4 in, left
7. I²S clock 41. Not connected
8. I²S data 42. Analog reference voltage high voltage part
9. I²S clock 43. Analog ground
10. Not connected 44. Volume capacitor MAIN
11. Standby (low-active) 45. Analog power supply 8.0V
12. I²C Bus address select 46. Volume capacitor AUX
13. Digital control output 0 47. Scart output 1, left
14. Digital control output 1 48. Scart output 1, right
15. Not connected 49. Reference ground 1 high voltage part
16. Not connected 50. Scart output 2, left
17. Not connected 51. Scart output 2, right
18. Audio clock output 52. Analog Shield Ground 3
19. Not connected 53. Not connected
20. Crystal oscillator 54. Not connected
21. Crystal oscillator 55. Not connected
22. Test Pin 56. Analog output MAIN, left
23. IF input 2 (if is used only, connect 57. Analog output MAIN, right to AVSS with 50 pF capacitor) 58.
24. IF common 58. Reference ground 2 high voltage part
25. IF input 1 59. Analog output AUX, left
26. Analog power 5V 60. Analog output AUX, right
27. Analog ground 61. Power-on-reset
28. Mono input 62. Not connected
29. Reference voltage IF A/D converter 63. Not connected
30. Scart input 1 in, right 64. Not connected
31. Scart input 1 in, left 65. I²S2-data input
32. Analog Shield Ground 2 66. Digital ground
33. Scart input 2 in, right 67. Digital power 5V
34. Scart input 2 in, left 68. ADR clock
DOLBY PRO LOGIC PROCESSOR IC
DPL3519A
The IC DPL3519A processor family is designed to decode Dolby encoded surround sound. The IC integrate the complete
Dolby Surround Pro Logic decoding on chip without any necessary external circuitry. It designed as a coprocessor of the
MSP34xx family.
It gets digitised sound from the audio processor IC MSP3410D for both C (centre) and S (surround) channels, and for
both L (left) and R (right) channels. The analog L and R outputs are supplied by MSP3410D, while the analog S and C
outputs are supplied by the DPL33519A.
Two I2S busses obtain synchronisation between the MSP and DPL :
I2S_CL; for timing of the transmission of I2S serial data 1.024Mhz and I2S_WS; The word strobe line defining the left
and right sample at 32Khz. The IC is also I2C bus controlled to select the sound feature (Stereo, 3D-Phonic and Dolby
Pro Logic).
Pinning:
1. Not connected 16. Not connected
2. Not connected 17. Not connected
3. Not connected 18. Audio clock output
4. I2S1 data input 19. Digital control input
5. I2S1 data output 20. Crystal oscillator
6. I2S wordstrobe 21. Crystal oscillator
7. I2S clock 22. Test pin
8. I2C data 23. Not connected
9. I2C clock 24. Not connected
10. Not connected 25. Not connected
11. Standby (low-active) 26. Analog power 5 V
12. I2C-Bus address select 27. Analog ground
13. Digital control IO 0 28. Mono input
14. Digital control IO 1 29. Reference voltage
15. Not connected 30. Scart input 1 in, right