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QS7785 Datasheet(PDF) 3 Page - Nippon Precision Circuits Inc |
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QS7785 Datasheet(HTML) 3 Page - Nippon Precision Circuits Inc |
3 / 15 page QS7785PF/CF NIPPON PRECISION CIRCUITS—3 PIN DESCRIPTION Number Name I/O Description Parallel Serial 1 QXCC4 O QEXPANDER C capacitor 4 2 QXDC1 I QEXPANDER D capacitor 1 3 QXDC2 O QEXPANDER D capacitor 2 4 QXDC3 I QEXPANDER D capacitor 3 5 QXDC4 O QEXPANDER D capacitor 4 6 GND – Ground 7 VDD – 4.5 to 5.5V digital supply 8 P/S I Input mode control (HIGH: parallel, LOW: serial) 9 SP – I Enhancement control (HIGH: high spread, LOW: low spread) – STRB I Serial data strobe (not applicable to QS7785CF) 10 MONO I Mono-to-stereo convert select (HIGH: mono to stereo mode, LOW: normal mode) 11 AC I Center output control (HIGH: center on, LOW: center off) 12 BYP – I Bypass control (HIGH: bypass, LOW: Qsurround) – SDA I/O Serial data input (also serves as ACK signal output for I2C bus) 13 SUR – I Surround speaker control (HIGH: surround speaker on, LOW: off) – SCL I Serial clock signal input 14 BASS I Bass boost mode control (HIGH: bass boost on, LOW: bass boost off) 15 MUTE I Mute signal control (HIGH: mute on, LOW: mute off) 16 PSAVE I Power save control (HIGH: power save on, LOW: power save off) 17 VREFOUT O VCC/2 reference voltage output 18 NC – No connection 19 VREFIN I VCC/2 reference voltage output (biased internally to VCC/2) 20 LPC I Center output lowpass filter 21 CIN I COUT output signal feedback input for front-channel output 22 COUT O Center signal output 23 SLOUT O Surround left-channel signal output 24 SROUT O Surround right-channel signal output 25 FLOUT O Front left-channel signal output 26 FROUT O Front right-channel signal output 27 QXBC4 O QEXPANDER B capacitor 4 28 QXBC3 I QEXPANDER B capacitor 3 29 QXBC2 O QEXPANDER B capacitor 2 30 QXBC1 I QEXPANDER B capacitor 1 31 VCC – 5 to 13V DC analog supply 32 QXAC4 O QEXPANDER A capacitor 4 33 QXAC3 I QEXPANDER A capacitor 3 34 QXAC2 O QEXPANDER A capacitor 2 35 QXAC1 I QEXPANDER A capacitor 1 36 BASC1 I Bass boost right-channel signal input |
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