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UA2311-S08-T 데이터시트(PDF) 4 Page - Unisonic Technologies |
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UA2311-S08-T 데이터시트(HTML) 4 Page - Unisonic Technologies |
4 / 5 page UA2311 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 www.unisonic.com.tw QW-R502-043,A FUNCTIONAL DESCRIPTION The UTC UA2311 accepts serial input data format of 16-bits word length. Both left and right data words are time multiplexed. The last 16 bits word before “WS” changes is recognized as the input data. The timing and input signal formats are shown in Figure 1 and 2. The most significant bit (bit 1) must always be first. The serial input data is shifted and latched for the Right and Left Channels. With a HIGH level on the word select input (WS), data is placed in the left input register and with a LOW level on the WS input, data is placed in the right input register(see Block Diagram). The data in the input registers are simultaneously latched in the output registers which control the bit switches. The 16 bits Right/Left Data is then converted to floating point expression whose format consists of 10 bits mantissa and 7 step exponent. This floating point expression is then converted to analog output voltage by the resistor-string. This signal is driven to the Right/Left Channel (VOR/VOL) by the buffer operational amplifier. LEFT RIGHT WS BCK DIN LSB+ 1 LSB MSB MSB-1 Figure.1 Input Signal Format tR tH tF MSB LSB RIGHT LEFT WS BCK Data MSB LSB Sample Out Figure.2 Timing and Input Signal Formats |
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