ES9842PRO datasheet(13/167 Pages) ESS

13 / 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

Volume Rate Configuration Registers

• Register 111: ADC CH1 VOLUME RATE

• Register 128: ADC CH2 VOLUME RATE

• Register 145: ADC CH3 VOLUME RATE

• Register 162: ADC CH4 VOLUME RATE

Audio Signal Processor (ASP)4

The ES9842 PRO includes 2 stereo audio signal processors (ASP) which can be used to implement both custom filter

coefficients as well as custom filter architectures. This feature may also be used to implement a programmable equalizer

(PEQ), and other applications.

See Digital Signal Path diagram for location in the data path.

The ASP can be used to implement a DC blocking high pass filter.

ASP Registers:

• Registers 35-58

Ask your FAE or distributor for the Distortion Compensation application note.

Peak Detection5

If the peak level of the ES9842 PRO device’s input audio stream rises above the programmed ADC#_PEAK_LEVEL value,

the corresponding peak flag will be set. The peak flag will stay set until it is cleared with

INTERRUPT_CLEAR_CH#_PEAK_DETECTION. Any of the GPIO pins can be configured to output the state of any of the

peak flags if INTERRUPT_MASK_CH#_PEAK_ DETECTION is set for the corresponding channel.

Peak Level Registers:

• Register 106: ADC CH1 PEAK DETECTOR LEVEL

• Register 123: ADC CH2 PEAK DETECTOR LEVEL

• Register 140: ADC CH3 PEAK DETECTOR LEVEL

• Register 157: ADC CH4 PEAK DETECTOR LEVEL

Peak Interrupt Clear Registers:

• Register 27[7]: INTERRUPT_CLEAR_CH4_PEAK_DETECTION

• Register 27[6]: INTERRUPT_CLEAR_CH3_PEAK_DETECTION

• Register 27[5]: INTERRUPT_CLEAR_CH2_PEAK_DETECTION

• Register 27[4]: INTERRUPT_CLEAR_CH1_PEAK_DETECTION

For help with designing with the ASP, please reference the ASP GUIDE Application Note. Available from your local FAE

upon request.

For further information on using Peak Detection, please reference the peak detector configuration application note.

Available from your local FAE upon request

ES9842PRO 数据表(PDF) 13 Page - ESS Technology,Inc

ES9842PRO 数据表(HTML) 13 Page - ESS Technology,Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载