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PT2256V-S Datasheet(PDF) 3 Page - Princeton Technology Corp |
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PT2256V-S Datasheet(HTML) 3 Page - Princeton Technology Corp |
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3 / 19 page  Tel:886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw PT2256V V1.2 - 3 - August, 2006 Electronic Volume Controller IC PT2256V PIN CONFIGURATION VSS OUT1 IN1 LT1 AGND /UP /DN OSC VDD OUT2 IN2 LT2 AGND DCO /INH /RST 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 PT2256V PIN DESCRIPTION Pin Number I/O Description Pin No. VSS - Negative Power Supply 1 OUT1 O Volume Output Pin 1 2 IN1 I Volume Input Pin 1 3 LT1 O Tap Output Pin 1 for Loudness Function 4 AGND - Analog Ground Pins 1 5, 12 UP I Volume UP Control Input Pin. The 1 step/1 push volume is controlled by pressing the UP Key. If the key has been pushed continuously increase. Built-in Pull-up Resistor. 6 DN I Volume DOWN Control Input Pin. The 1 step/1 push volume is controlled by pressing the DOWN Key. If the key is continuously pressed, the volume control will continuously decrease. Built-in Pull-up Resistor. 7 OSC I/O Oscillation Pin. The oscillation circuit of a resistor and capacitor connection. Oscillator is activated when the key is pressed. 8 RST I Reset Pin. This pin sets the initial volume level. The volume level is set to -46dB by “L” Input. Built-in Pull-up Resistor Low Active 9 /INH I Backup Mode Input Pin 10 DCO O DC Output Pin for Volume Level Meter 11 LT2 O Tap Output Pin 2 for Loudness Function 13 IN2 I Volume Input Pin 2 14 OUT2 O Volume Output Pin 2 15 VDD - Positive Power Supply 16 |
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