XWM8731EDS 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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XWM8731EDS

Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates

Wolfson Microelectronics plc 

WM8731

Advanced Information

TABLE OF TABLES

Table 1 Powerdown Mode Current Consumption Examples .................................................... 11

Table 2 Line Input Software Control............................................................................................ 19

Table 3 Microphone Input Software Control............................................................................... 21

Table 4 ADC Software Control ..................................................................................................... 22

Table 5 ADC Software Control ..................................................................................................... 23

Table 6 DAC Software Control ..................................................................................................... 24

Table 7 Output Software Control ................................................................................................. 25

Table 8 Headphone Output Software Control ............................................................................ 27

Table 9 Bypass Mode Software Control...................................................................................... 29

Table 10 Side Tone Mode Table................................................................................................... 29

Table 11 Software Control of Reset............................................................................................. 30

Table 12 Software Control of Core Clock.................................................................................... 30

Table 13 Programming CLKOUT.................................................................................................. 31

Table 14 Digital Audio Interface Control ..................................................................................... 35

Table 15 Programming Master/Slave Modes .............................................................................. 35

Table 16 Sample Rate Control...................................................................................................... 37

Table 17 Normal Mode Sample Rate Look-up Table.................................................................. 38

Table 18 Normal Mode Actual Sample Rates.............................................................................. 39

Table 19 128fs Normal Mode Sample Rate Look-up Table........................................................ 39

Table 20 USB Mode Sample Rate Look-up Table....................................................................... 40

Table 21 USB Mode Actual Sample Rates .................................................................................. 41

Table 22 Activating DSP and Digital Audio Interface................................................................. 41

Table 23 Control Interface Mode Selection................................................................................. 41

Table 24 2-Wire MPU Interface Address Selection..................................................................... 42

Table 25 Power Conservation Modes Software Control ........................................................... 43

Table 26 Standby Mode ................................................................................................................ 44

Table 27 Poweroff Mode ............................................................................................................... 45

Table 28 Mapping of Program Registers..................................................................................... 45

Table 29 Register Map Description.............................................................................................. 50

Table 30 Digital Filter Characteristics ......................................................................................... 50

WOLFSON MICROELECTRONICS LTD

AI Rev 2.0 February 2001

5

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