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ES9826 датащи(PDF) 68 Page - ESS Technology,Inc |
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ES9826 датащи(HTML) 68 Page - ESS Technology,Inc |
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68 / 88 page ![]() ES9826 Datasheet VERSION 0.1.2 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM 68 Register 68: PGA GAIN CONTROL Bits [7:4] [3:0] Default 4'd0 4'd0 Bits Mnemonic Description [7:4] PGA_GAIN_SET_CH2 • If ARE is disabled, PGA_GAIN_SET_CH2 sets the amount of PGA gain (requires PGA_GAIN_CTRL_EN_CH2 = 1). • If ARE is enabled, PGA_GAIN_SET_CH2 controls the PGA gain when ARE is disengaged. Valid from 4'd0 (0dB) to 4'd10 (30dB), 3dB steps. Default is 0dB. [3:0] PGA_GAIN_SET_CH1 • If ARE is disabled, PGA_GAIN_SET_CH1 sets the amount of PGA gain (requires PGA_GAIN_CTRL_EN_CH1 = 1). • If ARE is enabled, PGA_GAIN_SET_CH1 controls the PGA gain when ARE is disengaged. Valid from 4'd0 (0dB) to 4'd10 (30dB), 3dB steps. Default is 0dB. Register 71-69: RESERVED Register 72: PGA SETTINGS Bits [7:6] [5] [4] [3:0] Default 2'd0 1'b0 1'b0 4'd0 Bits Mnemonic Description [7:6] RESERVED NA [5] PGA_RIN_CH2 CH2 PGA input impedance. • 1'b0: 2.5kΩ (default) • 1'b1: 10kΩ [4] PGA_RIN_CH1 CH1 PGA input impedance. • 1'b0: 2.5kΩ (default) • 1'b1: 10kΩ [3:0] RESERVED NA |
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