19
TDA9855
General description:
The TDA9855 is a bipolar-integrated BTSC stereo/SAP decoder with hi-fi audio processor (IýC-bus controlled) for application in TV sets.
Features:
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Quasi alignment-free BTSC stereo decoder due to auto adjustment of channel separation via IýC-bus
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High integration level with automatically tuned integrated filters
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Input level adjustment IýC-bus controlled
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Alignment-free Sap processing
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dbx noise reduction circuit
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Audio processor
-Selector for internal and external signals (line in)
-Automatic volume level control
-Subwoofer or surround output with separate volume control
-Volume control
-Special loudness characteristic automatically controlled in combination with volume setting
-Bass and treble control
-Audio signal zero crossing detection between any volume step switching
-Mute control at audio signal zero crossing
-IýC-bus tranceiver.
PINNING
PIN VALUE
1. Treble control capacitor, left channel
2. Bass control capacitor, left channel
3. Bass control capacitor, left channel
4. Not connected
5. Programmable address bit (module address)
6. Output, left channel
: 500mVrms, Min : 480mVrms,
Max : 520mVrms
7. Input loudness, left channel
8. Input volume control, left channel
: 2.15Vrms, Min : 2Vrms
9. Output effects, left channel
10. Automatic volume control capacitor
11. Reference voltage 0.5Vcc
: 4VDC
12. Line input, left channel
: 2.3Vrms, Min : 2Vrms
13. Input automatic volume control, left channel
: Min : 2Vrms
14. Output selector, left channel
15. Line output, left channel
: 500mVrms
16. Capacitor timing wideband for dbx
17. Capacitor timing spectral for dbx
18. Capacitor wideband for dbx
19. Capacitor spectral for dbx
20. Variable emphasis out for dbx
21. Variable emphasis in for dbx
22. Capacitor noise reduction for dbx
23. Capacitor mute for SAP
24. Capacitor DC decoupling for SAP
25. Common ground
: 0V
26. Serial data input/output
: High level input voltage:
Min : 3VDC, Max : Vcc Low level input voltage:
Min : -0.3VDC, Max : 1.5VDC
Low level output voltage : Max : 0.4VDC
27. Serial clock input
: High level input voltage:
Min : 3VDC, Max : Vcc
Low level input voltage : Min : -0.3VDC, Max : 1.5VDC
Low level output voltage : Max : 0.4VDC
28. Supply voltage
: 8VDC
29. Input composite signal
: 250mVrms
30. Capacitor for electronic filtering of supply
31. Capacitor for pilot detector
32. Capacitor for pilot detector
33. Capacitor for phase detector
34. Capacitor for filter adjust
35. Ceramic resonator
36. Capacitor DC decoupling mono
37. Capacitor DC decoupling stereo/SAP
38. Line output, right channel
: 500mVrms
39. Output selector, right channel
40. Input automatic volume control, right channel
: Min:2Vrms
41. Line input, right channel
: 2.3Vrms, Min : 2Vrms
42. Capacitor 2 pseudo function
43. Capacitor 1 pseudo function
44. Output effects, right channel
45. Input volume control, right channel
: Min : 2Vrms
46. Input loudness, right channel
47. Output, right channel
: 500mVrms, Min : 480mVrms,
Max : 520mVrms
48. Not connected
49. Filter capacitor for subwoofer
50. Bass control capacitor, right channel
51. Bass control capacitor, right channel
52. Treble control capacitor
