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ES9842PRO 数据表(PDF) 129 Page - ESS Technology,Inc |
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ES9842PRO 数据表(HTML) 129 Page - ESS Technology,Inc |
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129 / 167 page  VERSION 0.5 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM ES9842 PRO Product Datasheet 129 Register 129: ADC CH2 SCALE Bits [7:2] [1:0] Default 6'd36 2'd0 Bits Mnemonic Description [7:2] RESERVED NA [1:0] ADC2_DATA_SCALE ADC data scale. • 2'd0: +0dB • 2'd1: +6dB • 2'd2: +12dB • 2'd3: +18dB Register 130: ADC CH2 PROG FILTER Bits [7:5] [4:2] [1] [0] Default 3'd4 3'd0 1'b0 1'b0 Bits Mnemonic Description [7:5] RESERVED NA [4:2] ADC2_FILTER_SHAPE Selects the 8x decimation FIR filter shape. • 3'd0: Minimum phase (default) • 3'd1: Linear phase apodizing fast roll-off • 3'd2: Linear phase fast roll-off • 3'd3: Linear phase fast roll-off low ripple • 3'd4: Linear phase slow roll-off • 3'd5: Minimum phase fast roll-off • 3'd6: Minimum phase slow roll-off • 3'd7: Minimum phase slow roll-off low dispersion [1] ADC2_PROG_COEFF_WRITE_EN Enables writing to the programmable coefficient RAM. • 1'b0: Disables write signal to the coefficient RAM (default) • 1'b1: Enables write signal to the coefficient RAM. [0] ADC2_PROG_COEFF_EN Enables the custom decimation filter coefficients. • 1'b0: Uses a built-in filter selected by FILTER_SHAPE (default) • 1'b1: Uses the coefficients programmed via ADC2_PROG_COEFF_IN |
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