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| Preliminary PT2314E Stereo Audio Processor for Home/TV Audio DESCRIPTION The PT2314E is an audio processor designed for versatile application, includes 4 stereo input selector with adjustable gain, master volume control with low frequency loudness compensation, speaker output attenuator and tone control. It is a good solution for the home audio signal processing. Due to the high reliability requirement from the audio business, the PT2314E improves both audio performances and input surge current capability, these causes the PT2314E is the best solution for the cost-effective audio systems. FEATURES * 4 stereo inputs with gain selection, range from 0dB to +11.25dB in 3.75dB/step * Master volume from 0 dB to -78.75dB in 1.25dB/step * Speaker attenuator for balance, range from 0dB to -38.75dB in 1.25dB/step * Each channel output can be muted individually. * Low frequency loudness compensation * Bass and Treble control, range from -14dB to +14dB in 2dB/step * Wide operation range (VDD = 4V to 10V) * Low harmonic distortion, low noise * Improved and replace PT2314 and PT2314A APPLICATIONS * Flat Panel TV * Home Audio System * Powered Speaker System APPLICATION CIRCUIT PT2314E VDD 1 VDD 2 AGND REF 28 SCL 27 SDA 26 DGND 25 OUT_L 24 OUT_R 23 BOUT_R 22 BIN_R 21 BOUT_L 20 BIN_L 19 LOUT 18 LIN 17 LIN1 16 LIN2 15 22uF Input Surge Protection L AUDIO 4 R L AUDIO 3 R L AUDIO 2 R L AUDIO 1 R 2.2K 2.2K 2.2K 2.2K 2.2K 2.2K 2.2K 2.2K 2.2uF 2.2uF 2.2uF 2.2uF 2.2uF 2.2uF 27n 27n 2.2uF 3 TREB_L 4 TREB_R 5 RIN 6 ROUT 7 LOUD_R 8 RIN4 9 RIN3 10 RIN2 11 RIN1 12 LOUD_L MCU Front Left 10uF 10uF 100n 100n 100n 100n 2.2uF 5.6K Front Right 5.6K 100n Power Amplifier 100n 2.2uF 2.2uF 13 LIN4 14 LIN3 Tel: 886-66296288Fax: 886-29174598 http://www.princeton.com.tw2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2314E BLOCK DIAGRAM Speaker Attenuator With Mute OUT_L OUT_R REF TREB_L BIN_L BOUT_L REF TREBLE Master Volume TREBLE TREB_R BIN_R BOUT_R BASS REF BASS REF Loud SW LOUD_L LOUDNESS LOUDNESS LOUD_R LIN LOUT LIN4 LIN3 LIN2 LIN1 Input SW and GAIN RIN ROUT RIN4 RIN3 RIN2 RIN1 REF VDD INT Ref REF SCL REF REF BIAS I2C DECODER SDA DGND AGND PRE1.0 2 September 2009 PT2314E ORDER INFORMATION Valid Part Number PT2314E-S Package Type 28 Pins, SOP, 300mil Top Code PT2314E PIN CONFIGURATION VDD 1 AGND 2 TREB_L 3 TREB_R 4 RIN 5 ROUT 6 LOUD_R 7 RIN4 8 RIN3 9 RIN2 10 RIN1 11 LOUD_L 12 LIN4 13 LIN3 14 PT2314E 28 REF 27 SCL 26 SDA 25 DGND 24 OUT_L 23 OUT_R 22 BOUT_R 21 BIN_R 20 BOUT_L 19 BIN_L 18 LOUT 17 LIN 16 LIN1 15 LIN2 PRE1.0 3 September 2009 PT2314E PIN DESCRIPTION Pin Name VDD AGND TREB_L TREB_R RIN ROUT LOUD_R RIN4 RIN3 RIN2 RIN1 LOUD_L LIN4 LIN3 LIN2 LIN1 LIN LOUT BIN_L BOUT_L BIN_R BOUT_R OUT_R OUT_L DGND SDA SCL REF I/O I I I O I I I I I I I I I I I O I O I O O O I I Description Supply input voltage Analog ground Left channel input for treble controller Right channel input for treble controller Right channel volume controller input Right channel Input selector output Right channel loudness input Right channel input 4 Right channel input 3 Right channel input 2 Right channel input 1 Left channel loudness input Left channel input 4 Left channel input 3 Left channel input 2 Left channel input 1 Left channel volume controller input Left channel Input selector output Left channel input for bass controller Left channel output for bass controller Right channel input for bass controller Right channel output for bass controller Right channel output Left channel output Digital ground I2C data input I2C clock input Analog reference voltage (1/2VDD) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PRE1.0 4 September 2009 PT2314E 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, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw PRE1.0 5 September 2009 |
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