PT2314

 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 DESCRIPTION PT2314 is a four-channel input digital audio processor utilizing CMOS Technology. Volume, Bass, Treble and Balance are incorporated into a single chip. Loudness Function and Selectable Input Gain are also provided to build a highly effective electronic audio processor having the highest performance and reliability with the least external components. All functions are programmable using the I2C Bus. The pin assignments and application circuit are optimized for easy PCB layout and cost saving advantage for audio application. FEATURES • CMOS Technology • Least External Components • Treble and Bass Control • Loudness Function • 4 Stereo Inputs with Selectable Input Gain • Input/Output for External Noise Reduction System/Equalizer • 2 Independent Speaker Controls for Balance Control • Independent Mute Function • Volume Control in 1.25 dB/step • Low Distortion • Low Noise and DC Stepping • Controlled by I2C Bus Micro-Processor Interface • Available in 28 Pins, DIP or SOP APPLICATIONS • Car Stereo (Audio) • Hi-Fi Audio System Note: Purchase of I2C Component of Princeton Technology Corporation (PTC) conveys a license under Philips I2C Patent Right to use these components in any I2C System, provided that the system conforms to the I2C Standard Specification defined by Philips PT2314 V1.4 - 1 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 BLOCK DIAGRAM TREBLE_L BOUT_LLOUD_LLOUTBIN_LRBLIN1LIN2LIN3LIN4RIN1RIN2RIN3RIN4LIN1LIN2LIN3LIN4RIN1RIN2RIN3RIN4Volume &LoudnessInputSelector&GainControlVolume &LoudnessBassLINSpeakerATTTrebleOUT_LMuteSerial Bus Decoder & LatchesCLKDATADGNDSpeakerATTBassTrebleOUT_RMuteRBSupplyLOUD_R AGNDVDDREFROUTRINTREBLE_RBOUT_RBIN_R PT2314 V1.4 - 2 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 PIN CONFIGURATION VDDAGNDTREB_LTREB_RRINROUTLOUD_RRIN4RIN3RIN2RIN1LOUD_LLIN4LIN31234567891011121314PT23142827262524232221201918171615REFCLKDATADGNDOUT_LOUT_RBOUT_RBIN_RBOUT_LBIN_LLOUTLINLIN1LIN2 PT2314 V1.4 - 3 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 PIN DESCRIPTION Pin Name I/O Description VDD - Supply Input Voltage AGND - Analog Ground TREB_L I Left Channel Input for Treble Controller TREB_R I Right Channel Input for Treble Control RIN I Audio Processor Right Channel Input ROUT O Gain Output and Input Selector for Right Channel LOUD_R I Right Channel Loudness Input RIN4 I Right Channel Input 4 RIN3 I Right Channel Input 3 RIN2 I Right Channel Input 2 RIN1 I Right Channel Input 1 LOUD_L I Left Channel Loudness Input LIN4 I Left Channel Input 4 LIN3 I Left Channel Input 3 LIN2 I Left Channel Input 2 LIN1 I Left Channel Input 1 LIN I Audio Processor Left Channel Input LOUT O Gain Output and Input Selector for Left Channel BIN_L I Left Channel Input for Bass Controller BOUT_L O Left Bass Controller Output Channel BIN_R I Right Channel Input for Bass Controller BOUT_R O Right Channel Output for Bass Controller OUT_R O Right Speaker Output OUT_L O Left Speaker Output DGND - Digital Ground DATA I Control Data Input CLK I Clock Input for Serial Data Transmission REF - Analog Reference Voltage (1/2 VDD) 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 PT2314 V1.4 - 4 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 FUNCTIONAL DESCRIPTION BUS INTERFACE Data are transmitted to and from the microprocessor to the PT2314 via the DATA and CLK. The DATA and CLK make up the BUS Interface. It should be noted that the pull-up resistors must be connected to the positive supply voltage. DATA VALIDITY A data on the DATA Line is considered valid and stable only when the CLK Signal is in HIGH State. The HIGH and LOW State of the DATA Line can only change when the CLK signal is LOW. Please refer to the figure below. DATACLKDATA LINE STABLE,DATA VALIDDATA CHANGE ALLOWED START AND STOP CONDITIONS A Start Condition is activated when 1) the CLK is set to HIGH and 2) DATA shifts from HIGH to LOW State. The Stop Condition is activated when 1) CLK is set to HIGH and 2) DATA shifts from LOW to HIGH State. Please refer to the timing diagram below. CLKDATASTARTSTOP BYTE FORMAT Every byte transmitted to the DATA Line consist of 8 bits. Each byte must be followed by an Acknowledge Bit. The MSB is transmitted first. PT2314 V1.4 - 5 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 ACKNOWLEDGE During the Acknowledge Clock Pulse, the master (µP) puts a resistive HIGH level on the DATA Line. The peripheral (audio processor) that acknowledges has to pull-down (LOW) the DATA line during the Acknowledge Clock Pulse so that the DATA Line is in a Stable Low State during this Clock Pulse. Please refer to the diagram below. CLK1234789DATAMSBACKNOWLEDGEMENTFROM RECEIVER STARTThe audio processor that has been addressed has to generate an acknowledge after receiving each byte, otherwise, the DATA Line will remain at the High Level during the ninth (9th) Clock Pulse. In this case, the master transmitter can generate the STOP Information in order to abort the transfer. TRANSMISSION WITHOUT ACKNOWLEDGE If you want to avoid the acknowledge detection of the audio processor, a simpler µP transmission may be used. Wait one clock and do not check the slave acknowledge of this same clock then send the new data. If you use this approach, there are greater chances of faulty operation as well as decrease in noise immunity. INTERFACE PROTOCOL The interface protocol consists of the following (see diagram below): • A Start Condition • A Chip Address Byte including the PT2314 address. The 8th Bit of the Byte must be “0”. PT2314 must always acknowledge the end of each transmitted byte. • A Data Sequence (N-Bytes + Acknowledge) • A Stop Condition PT2314 Address MSB First Byte LSB MSB LSB MSB LSB START 1 0 0 0 1 0 0 0 ACK DATAACKDATA ACKDATA TRANSMITTED (N-BYTES+ACKNOWLEDGE) STOP Note: ACK = ACKNOWLEDGE MAX. CLOCK SPEED = 100KBITS/S PT2314 V1.4 - 6 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 SOFTWARE SPECIFICATION PT2314 ADDRESS PT2314 Address is shown below. 1 MSB 0 0 0 0 1 0 0 LSB DATA BYTES MSB LSB 0 0 B2 B1 B0 A2 A1 A0 1 1 0 B1 B0 A2 A1 A0 1 1 1 B1 B0 A2 A1 A0 0 1 0 G1 G0 S2 S1 S0 0 1 1 0 C3 C2 C1 C0 0 1 1 1 C3 C2 C1 C0 Function Volume Control Speaker ATT L Speaker ATT R Audio Switch Bass Control Treble Control where Ax = 1.25 dB steps; Bx = 10 dB steps; Cx = 2 dB steps; Gx = 3.75 dB/steps VOLUME The table below gives a detailed description of the Volume Data Bytes. For example, a volume of -37.5 dB is given by 0 0 0 1 1 1 1 0. MSB LSB Function 0 0 B2 B1 B0 A2 A1 A0 Volume 1.25 dB steps 0 0 0 0 0 0 1 -1.25 0 1 0 -2.5 0 1 1 -3.75 1 0 0 -5 1 0 1 -6.25 1 1 0 -7.5 1 1 1 -8.75 0 0 B2 B1 B0 A2 A1 A0 Volume 10dB steps 0 0 0 0 0 0 1 -10 0 1 0 -20 0 1 1 -30 1 0 0 -40 1 0 1 -50 1 1 0 -60 1 1 1 -70 PT2314 V1.4 - 7 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 SPEAKER ATTENUATORS The table below gives a detailed description of the speaker attenuators data bytes. For example, an attenuation of 30dB on the Speaker R (Right) is given by: 1 1 1 1 1 0 0 0. MSB LSB 1 1 0 B1 B0 A2 A1 A0 1 1 1 B1 B0 A2 A1 A0 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 0 0 0 1 1 0 1 1 1 1 1 1 1 Function Speaker L Speaker R 0 -1.25 -2.5 -3.75 -5 -6.25 -7.5 -8.75 0 -10 -20 -30 Mute AUDIO SWITCH DATA BYTE The following table shows the detailed description of the Audio Switch Data Bytes. For example, a Stereo 1 Input with Gain of +11.25 dB Loudness ON is given by: 0 1 0 0 0 0 0 0. MSB LSB Function 0 1 0 G1 G0 S2 S1 S0 Audio Switch 0 0 Stereo 1 0 1 Stereo 2 1 0 Stereo 3 1 1 Stereo 4 0 Loudness ON 1 Loudness OFF 0 0 +11.25dB 0 1 +7.5dB 1 0 +3.75dB 1 1 0dB PT2314 V1.4 - 8 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 BASS AND TREBLE DATA BYTES The following table shows a detailed description of the Bass and Treble Data Byte. For example a Treble at -12dB is given by: 0 1 1 1 0 0 0 1. MSB LSB Function 0 1 1 0 C3 C2 C1 C0 Bass 0 1 1 1 C3 C2 C1 C0 Treble 0 0 0 0 -14 0 0 0 1 -12 0 0 1 0 -10 0 0 1 1 -8 0 1 0 0 -6 0 1 0 1 -4 0 1 1 0 -2 0 1 1 1 0 1 1 1 1 0 1 1 1 0 2 1 1 0 1 4 1 1 0 0 6 1 0 1 1 8 1 0 1 0 10 1 0 0 1 12 1 0 0 0 14 Unit: dB PT2314 V1.4 - 9 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 ABSOLUTE MAXIMUM RATINGS Parameter Operating Supply Voltage Operating Temperature Storage Temperature Symbol Vs Topr Tstg Rating 10.5 -40 to +85 -65 to +150 Unit V ℃ ℃ QUICK REFERENCE DATA Parameter Supply Voltage Max. Input Signal Handling Total Harmonic Distortion (V=1Vrms, f=1KHz) Signal to Noise ratio Channel Separation ( f=1KHz) Volume Control 1.25dB step Bass & Treble Control 2dB step Balance Control 1.25dB step Input Gain 3.75dB step Mute Attenuation SymbolVs VCL Min. 6 2 Typ. 9 2.5 Max. 10 Unit V Vrms THD 0.07 0.15 % S/N Sc -75 -14 -37.5 0 95 85 85 0 +14 0 11.25 dB dB dB dB dB dB dB PT2314 V1.4 - 10 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 ELECTRICAL CHARACTERISTICS (Unless specified: Tamb = 25℃, Vc=9V, RL=10KΩ, Rg = 600Ω, all controls flat (G=0), f=1KHz) Parameter Symbol Test Condition Min. Typ. Max. Unit Supply Supply Voltage Vcc 6 9 10 V Supply Current Is 30 40 mA Input Selectors Input Resistance RII Input 1,2,3 80 100 120 KΩ Clipping Level VCL Av=-8.75 dB ; d=0.3%2 2.5 Vrms Input Separation (2) SIN 80 100 dB Min. Input Gain GINmin -1 0 1 dB Max. Input Gain GINmax 11.25 dB Volume Control Input Resistance RIV 30 40 50 KΩ Control Range CRANGE 65 70 75 dB Min. Attenuation AVMIN -1 0 1 dB Max. Attenuation AVMAX 65 70 75 dB Step Resolution ASTEP 0.5 1.25 1.75 dB AV=0 to -20dB -1.251.25 dB Attenuation Set Error EA 0 AV=-20 to –60dB -3.0 2 dB Speaker Attenuators Control Range CRANGE 35 37.5 40 dB Step Resolution SSTEP 0.5 1.25 1.75 dB Attenuation Set Error EA 1.5 dB Output Mute 75 85 dB AMUTE Attenuation Bass Control (1) Control Range Gb Max. Boost/Cut ±12 ±14 ±16 dB Step Resolution BSTEP 1 2 3 dB Internal Feedback 34 44 58 KΩ RB Resistance Treble Control (1) Control Range Gt Max. Boost/Cut ±13 ±14 ±15 dB Step Resolution TSTEP 1 2 3 dB PT2314 V1.4 - 11 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 Parameter Symbol Test Condition Min. Typ. Max. Unit Audio Outputs Clipping Level VOCL d0.3% 2 2.5 Vrms =Output Resistance ROUT 1.7 1.9 2.1 Ω DC Voltage Level VOUT 4.2 4.5 4.8 V General BW=20-20KHz, flat -97 dB Output Noise eNO Output Muted -92 dB All gains=0dB A Curve All -100 dB Gains=0dB All Gains=0dB Signal to Noise Ratio S/N 95 dB Vo=1Vrms AV=0, VIN=1Vrms 0.1 0.3 % AV=-8.75dB, 0.07 0.15 % Distortion d VIN=1Vrms AV=-8.75dB, 0.03 0.1 % VIN=0.3Vrms =Channel Separation Sc 80 90 dB Left/Right Bus Inputs Input Low Voltage VIL 1 V Input High Voltage VIH 3 V Input Current IIN -5 +5 µA Output Voltage SDA Vo Io1.6mA 0.4 V Acknowledge Notes: 1. For the Bass and Treble Response, please, refer to the diagram below. The center frequency and quality of the resonance behavior can be selected by the external circuitry. A standard first order bass response can realized by a standard feedback network. 2. The selected input is grounded thru the 2.2µF capacitor. PT2314 V1.4 - 12 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 RESPONSE (dB) FREQUENCY (HZ) Typical Tone Response (with the ext. Components indicated in the test circuit) dB Hz Loudness vs Volume Attenuation Frequency Response (C12=C13=100nF) PT2314 V1.4 - 13 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 OPEN10n100ndB56n220n33nShorted to VREF C12, C13 vs Loudness Frequency Response (Volume=-40dB, All other controls are flat) Hz PT2314 V1.4 - 14 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 APPLICATION CIRCUIT R25.6KC112.2µMCU+C5 2.2µ+RAM/FMTuner+R25DGND11RIN116LIN126DATA27CLK18LOUT 17LIN12LOUD_LC13100n20BOUT_LC16100n19BIN_L C17100n3TREB_LC192.7nC1 2.2µC6 2.2µ+R CD Player+RC2010µ10RIN215LIN2OUT_R23+C2 2.2µC7 2.2µ+RTape+RPT23149RIN3OUT_L24+C2110µ14LIN38RIN4BOUT_RLOUD_RTREB_RBIN_R AGND4C15100nC182.7nROUTC3 2.2µC8 2.2µ+RAuxC4 2.2µ+RVDD1228+C922µ6+C102.2µ57C12100n22C14100n21VDDR15.6KREFRIN13LIN4 Notes: 1. It is suggested that you use Mylar Capacitor for capacitors, C12 ~ C19. 2. Resistor (R) Range = 2.0KΩ to 3.6KΩ 3. Recommended Value of Resistor ( R ) = 2.4KΩ PT2314 V1.4 - 15 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 ORDER INFORMATION Valid Part Number PT2314-D PT2314 PT2314-D (L) PT2314 (L) Package Type 28 Pins, DIP, 300mil 28 Pins, SOP, 300mil 28 Pins, DIP, 300mil 28 Pins, SOP, 300mil Top Code PT2314-D PT2314 PT2314-D PT2314 Notes: 1. (L), (C) or (S) = Lead Free 2. The Lead Free mark is put in front of the date code. PT2314 V1.4 - 16 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 PACKAGE INFORMATION 28 PINS, DIP, 300 MIL PT2314 V1.4 - 17 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 Symbol Min. Nom. Max. A - - 0.210 A1 0.015 - - A2 0.115 0.130 0.195 b 0.014 0.018 0.022 b1 0.014 0.018 0.020 b2 0.045 0.060 0.070 b3 0.030 0.039 0.045 c 0.008 0.010 0.014 c1 0.008 0.010 0.011 D 1.345 1.365 1.400 D1 0.005 - - E 0.300 0.310 0.325 E1 0.240 0.250 0.280 e 0.100 BSC eA 0.300 BSC eB - - 0.430 eC 0.000 - 0.060 L 0.115 0.130 0.150 Notes: 1. All dimensions are in INCHES. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension A, A1 and L are measured with the package seated in JEDEC Seating Plane Gauge GS-3. 4. D, D1, and E1 dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch. 5. E and eA measured with the leads constrained to be perpendicular to datum -C-. 6. eB and eC are measured at the lead tips with the leads constrained. N is the number of terminal positions (N=28) 7. Pointed or rounded lead tips are preferred to ease insertion. 8. b2 and b3 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010” (0.25mm). 9. This variation is a ½ lead package. 10. Distance between leads including dambar protrusions to be 0.005 inch minimum. 11. Datum plane -H- coincident with the bottom of lead where lead exits body. 12. Refer to JEDEC MS-001 Variation BF. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION PT2314 V1.4 - 18 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 28 PINS, SOP, 300 MIL NINDEXAREAHE-B-.25 (.010) M B M123L-A-DSEATING PLANEA-C-∞A1B.10 (.004)h X 45-e-C.25 (.010) M C A M B S Symbol Min. Nom. Max. A 2.35 - 2.65 A1 0.10 - 0.30 B 0.33 - 0.51 C 0.23 - 0.32 D 17.70 - 18.10 E 7.40 - 7.60 e 1.27 bsc. H 10.00 - 10.65 h 0.25 - 0.75 L 0.40 - 1.27 - α 0° 8° PT2314 V1.4 - 19 - July, 2005 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw 4-Channel Input Audio Processor PT2314 Notes: 1. Dimensioning and tolerancing per ANSI Y14.5M-1982. 2. Dimension “D” does not include mold flash, protrusions or gate burrs. Mold Flash, protrusion or gate burrs shall not exceed 0.15 mm (0.006 in) per side. 3. Dimension “E” does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25 mm (0.010 in) per side. 4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area. 5. “L” is the length of the terminal for soldering to a substrate. 6. N is the number of the terminal positions (N=28) 7. The lead width “B” as measured 0.36 mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61 mm (0.24 in). 8. Controlling dimension：MILLIMETER. 9. Refer to JEDEC MS-013, Variation AE. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION. PT2314 V1.4 - 20 - July, 2005