PT12917 6 Inputs, 3 Band EQ Car Audio Processor DESCRIPTION The PT12917 is a car audio processor with 6 input sources selector and 3-band equalizer, which includes a fully integrated high performance audio filters that are built into a single chip to provide audio system having the highest audio performance and reliability. Digital control allows programming in a wide range of filter characteristics. APPLICATION Car audio system FEATURES 2 Controlled by I C Bus Micro-processor interface Input gain from 0 to +15dB with 1dB/step 4 stereo inputs for audio sources 1 Quasi-Differential input for external auxiliary input. 1 Fully-Differential input for auxiliary input or disc changer. 2 mono mixing inputs for GPS navigation system and mobilephone. 2 channels electronic volume with soft step, from +15 to -79dB with 1dB/step Soft mute 1 mono output with soft step volume for subwoofer, from +15 to -79dB with 1dB/step 3 band equalizer with gain, Q-factor and center frequency programmable, bass and middle band with soft step gain. Frequency and gain programmable loudness : 0 to -15dB with 1dB/step and soft step 4 independent speaker outputs volume with soft step: from +15 to -79dB with 1dB/step 28-pin SOP package BLOCK DIAGRAM MONO1 26 MONO2 25 SE4L 28 SE4R 27 FDL+ 1 FDL- 2 Soft Step Mixing Volume Soft Step Mixing Volume Soft Step Soft Step Loudness InGain FDR+ 3 FDR- 4 SE3L 5 SE3R 6 SE2L 7 SE2R 8 SE1L 9 SE1R 10 QDL 11 QDG 12 QDR 13 Soft Mute Soft Step Volume Soft Step Middle Treble Mono Fader Soft Step Bass Soft Step Mono Fader INPUT MULTIPLEXER Soft Step Mono Fader Soft Step Mono Fader L+R DIGITAL CONTROL SUPPLY 24 15 14 VDD GND CREF 21 Mute Soft Step Mono Fader MIX 20 OUTLF MIX 17 OUTRF 19 OUTLR 18 OUTRR 16 OUTMO I2C BUS 22 23 SCL SDA Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan PT12917 APPLICATION CIRCUIT 1 SE4L FDL+ 28 2.2uF 2.2uF 2 FDL- SE4R 27 2.2uF 2.2uF 3 FDR+ MONO1 26 2.2uF 2.2uF 4 FDR- MONO2 25 2.2uF 2.2uF 5 SE3L VDD 24 2.2uF 10uF 6 SE3R SDA 23 7 SE2L SCL 22 8 SE2R MUTE 21 9 SE1L OUTLF 20 100nF 2.2uF PT12917 2.2uF 2.2uF 2.2uF 4.7uF 10 SE1R OUTLR 19 2.2uF 4.7uF 11 QDL OUTRR 18 2.2uF 4.7uF 12 QDG OUTRF 17 2.2uF 4.7uF 13 QDR OUTMO 16 2.2uF 4.7uF 14 CREF GND 15 10uF V1.1 2 June, 2015 PT12917 ORDER INFORMATION Part Number PT12917-S Package Type 28 Pins, SOP, 300mil Top Code PT12917-S PIN CONFIGURATION FD L+ SE 4L 28 2 FD L- SE 4R 27 3 FD R+ MONO1 26 4 FD R- MONO2 25 5 SE 3L VD D 24 6 SE 3R SD A 23 7 SE 2L SCL 22 8 SE 2R MUTE 21 9 SE 1L OUTLF 20 10 SE 1R OUTLR 19 11 QDL OUTRR 18 12 QDG OUTRF 17 13 QDR OUTMO 16 14 CREF G ND 15 3 PT12917 V1.1 1 June, 2015 PT12917 PIN DESCRIPTION V1.1 Pin Name I/O Description Pin No. FDL+ I Fully-Differential Input left channel + 1 FDL- I Fully-Differential Input left channel - 2 FDR+ I Fully-Differential Input right channel + 3 FDR- I Fully-Differential Input right channel - 4 SE3L I Single-ended input 3 left channel 5 SE3R I Single-ended input 3 right channel 6 SE2L I Single-ended input 2 left channel 7 SE2R I Single-ended input 2 right channel 8 SE1L I Single-ended input 1 left channel 9 SE1R I Single-ended input 1 right channel 10 QDL I Quasi-Differential input left channel 11 QDG I Quasi-Differential input common 12 QDR I Quasi-Differential input right channel 13 CREF O For internal reference bypass capacitor 14 GND - Ground 15 OUTMO O Mono output for subwoofer 16 OUTRF O Front right output 17 OUTRR O Rear right output 18 OUTLR O Rear left output 19 OUTLF O Front left output 20 MUTE I Soft mute input 21 SCL I I C bus clock SDA I/O VDD 2 22 I C bus data 2 23 - Supply voltage 24 MONO2 I Mono mixing input 2 25 MONO1 I Mono mixing input 1 26 SE4R I Single-ended input 4 right channel 27 SE4L I Single-ended input 4 left channel 28 4 June, 2015 PT12917 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.1 24 June, 2015