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| Princeton Technology Corp. Sound Fader Controller IC DESCRIPTION Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2318 PT2318 is a sound fader controller IC utilizing CMOS Technology specially designed for car radio hi-fi audio applications. Four selectable stereo inputs, 1 mono input, bass, treble, volume, balance and fader controls, mute function and a special loudness feature which is automatically controlled in combination with the volume level setting are all built into a single I2C bus controlled stereo preamplifier chip having the highest performance and reliability. Pin assignments and application circuits are optimized for easy PCB layout and cost saving advantages. FEATURES * * * * * * * * * * * * CMOS Technology I2C Bus Control Interface 4 Selectable Stereo Inputs 1 Mono Input Volume, Balance and Fader Controls Bass & Treble Controls Noise Reduction Circuit Interface provided External Equalizer Interface provided Mute Control at Audio Signal Zero Crossing Internal Power-On Reset Function Mute Function controlled via the I2C Bus or Pin Special Automatic Loudness Feature in combination with the Volume Setting APPLICATIONS * Car Audio * Hi-Fi Audio Applications PT2318 pre 1.0 Page 1 Updated March 2001 Princeton Technology Corp. Sound Fader Controller IC PIN CONFIGURATION Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2318 SDA GND SL_OUT FL_OUT TRE_L BAS2_L BAS1_L VOL1_L LOUD_L SEL_l IN_L4 MUTE IN_L3 MONO IN_L2 IN_L1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 10 19 18 17 SCL VCC SR_OUT FR_OUT TRE_R BAS2_R BAS1_R VOL1_R LOUD_R SEL_R IN_R4 VREF IN_R3 CAP IN_R2 IN_R1 PT2318 pre 1.0 Page 2 Updated March 2001 Princeton Technology Corp. Sound Fader Controller IC APPLICATION CIRCUIT I C Bus 2 Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2318 MCU SDA GND 3 SL_OUT To Output 4 FL_OUT 5 TRE_L 5.6nF 6 BAS2_L 33nF 7 BAS1_L CKVL 220nF 8 VOL1_L 2.2k? 9 LOUD_L 20k ? 8.2nF 150nF 10 SEL_l Input Source 4 (Left Channel) 11 IN_L4 Mute 10nF 12 MUTE 13 IN_L3 Input Source 3 (Left Channel) Mono Source Input MONO 15 IN_L2 Input Source 2 (Left Channel) Input Source 1 (Left Channel) 16 IN_L1 1 2 CKIN SCL 32 VCC 31 SR_OUT 30 To Output FR_OUT 29 TRE_R 28 5.6nF BAS2_R 27 33nF BAS1_R 26 CKVL 220nF VOL1_R 25 2.2k ? LOUD_R 24 8.2nF 20k ? 150nF SEL_R 23 Input Source 4 (Right Channel) IN_R4 22 VREF 21 Input Source 3(Right Channel) IN_R3 20 CAP 19 Input Source 2 (Right Channel) IN_R2 18 Input Source 1 (Right Channel) IN_R1 17 ORDER INFORMATION Valid Partnumber PT2318 Package Type 32-pins, SOP Package (300 mil) PT2318 pre 1.0 Page 3 Updated March 2001 |
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