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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ES9027SPRO 데이터시트(PDF) 9 Page - ESS Technology,Inc |
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ES9027SPRO 데이터시트(HTML) 9 Page - ESS Technology,Inc |
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9 / 89 page  ES9027PRO Datasheet VERSION 0.4.1 9 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM Hardware Mode The ES9027PRO has 32 pre-configured modes that can be set with external pin configuration. These modes configure the DAC for different input serial data rates and set the DAC muting. These modes are set with pins: • MODE (Pin 17) • HW0 (Pin 15) • HW1 (Pin 16) • HW2 (Pin 30) • MUTE_CTRL (Pin 31) Each hardware mode pin has 4 states: • 0 – Pin directly connected to GND • 1 – Pin directly connected to AVDD • Pull 0 – Pin pulled to GND through 47kΩ resistor • Pull 1 – Pin pulled to AVDD through 47kΩ resistor Design Information Each hardware mode pin can be configured with either a pull-up or pull-down resistor. Therefore, it is important that the pin is configured to allow for the desired hardware modes. Some guidelines include the following: • The HW0 and HW1 pins never require a pull up or pull-down resistor. HW2/ MODE AVDD or GPIO 47k HW2/ MODE 47k Pull-up Pull-down GND or GPIO Figure 2 – Hardware mode pin configurations Muting MUTE_CTRL (Pin 31) is used to control the muting of the output and enabling of the Automute feature while in Hardware Mode: • 0 – Output Muted, No Automute • 1 – Output Unmuted, No Automute • Pull 0 – Output Muted, Automute Enabled • Pull 1 – Output Unmuted, Automute Enabled |
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