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WM8973-EV1M

Rev 1.0, February 2005

REGISTER

ADDRESS

(Bit 15 – 9)

remarks

Bit[8] Bit[7] Bit[6] Bit[5] Bit[4] Bit[3] Bit[2] Bit[1] Bit[0]

default

R0 (00h)

0000000

Left Input volume

LIVU

LINMUTE

LIZC

LINVOL

010010111

R1 (01h)

0000001

Right Input volume

RIVU

RINMUTE

RIZC

RINVOL

010010111

R2 (02h)

0000010

LOUT1 volume

LO1VU

LO1ZC

LOUT1VOL[6:0]

001111001

R3 (03h)

0000011

ROUT1 volume

RO1VU

RO1ZC

ROUT1VOL[6:0]

001111001

(04h)

0000100 Reserved

0 0 0 0 0 0 0 0 0 000000000

R5 (05h)

0000101

ADC & DAC Control ADCDIV2 DACDIV2

ADCPOL[1:0]

HPOR

DACMU

DEEMPH[1:0]

ADCHPD

000001000

(06h)

0000110 Reserved

0 0 0 0 0 0 0 0 0 000000000

R7 (07h)

0000111

Audio Interface

BCLKINV

LRSWAP

LRP

WL[1:0]

FORMAT[1:0]

000001010

R8 (08h)

0001000

Sample rate

BCM[1:0]

CLKDIV2

SR[4:0]

USB

000000000

(09h)

0001001 Reserved

0 0 0 0 0 0 0 0 0 000000000

R10 (0Ah)

0001010

Left DAC volume

LDVU

LDACVOL[7:0]

011111111

R11 (0Bh)

0001011

Right DAC volume

RDVU

RDACVOL[7:0]

011111111

R12 (0Ch)

0001100

Bass control

BASS[3:0]

000001111

R13 (0Dh)

0001101

Treble control

TRBL[3:0]

000001111

R15 (0Fh)

0001111

Reset

writing to this register resets all registers to their default state

not reset

R16 (10h)

0010000

3D control

MODE3D

3DUC

3DLC

3DDEPTH[3:0]

3DEN

000000000

R17 (11h)

0010001

ALC1

ALCSEL[1:0]

MAXGAIN[2:0]

ALCL[3:0]

001111011

R18 (12h)

0010010

ALC2

ALCZC

HLD[3:0]

000000000

R19 (13h)

0010011

ALC3

DCY[3:0]

ATK[3:0]

000110010

R20 (14h)

0010100

Noise Gate

NGTH[4:0]

NGG[1:0]

NGAT

000000000

R21 (15h)

0010101

Left ADC volume

LAVU

LADCVOL[7:0]

011000011

R22 (16h)

0010110

Right ADC volume

RAVU

RADCVOL[7:0]

011000011

R23 (17h)

0010111

Additional control(1)

TSDEN

VSEL[1:0]

DMONOMIX[1:0]

DATSEL[1:0]

DACINV

TOEN

011000000

R24 (18h)

0011000

Additional control(2)

OUT3SW[1:0]

HPSWEN HPSWPOL ROUT2INV

TRI LRCM

ADCOSR

DACOSR

000000000

R25 (19h)

0011001

Pwr Mgmt (1)

VMIDSEL[1:0]

VREF

AINL

AINR

ADCL

ADCR

MICB

DIGENB

000000000

R26

(1Ah) 0011010

Pwr

Mgmt

(2)

DACL DACR LOUT1 ROUT1 LOUT2 ROUT2 MONO OUT3

000000000

R27 (1Bh)

0011011

Additional Control (3)

ADCLRM[1:0]

VROI

000000000

R31 (1Fh)

0011111

ADC input mode

MONOMIX[1:0]

RDCM

LDCM

000000000

R32 (20h)

0100000

ADCL signal path

LINSEL[1:0]

LMICBOOST[1:0]

000000000

R33 (21h)

0100001

ADCR signal path

RINSEL[1:0]

RMICBOOST[1:0]

000000000

R34 (22h)

0100010

Left out Mix (1)

LD2LO

LI2LO

LI2LOVOL[2:0]

LMIXSEL[2:0]

001010000

R35 (23h)

0100011

Left out Mix (2)

RD2LO

RI2LO

RI2LOVOL[2:0]

001010000

R36 (24h)

0100100

Right out Mix (1)

LD2RO

LI2RO

LI2ROVOL[2:0]

RMIXSEL[2:0]

001010000

R37 (25h)

0100101

Right out Mix (2)

RD2RO

RI2RO

RI2ROVOL[2:0]

001010000

R38 (26h)

0100110

Mono out Mix (1)

LD2MO

LI2MO

LI2MOVOL[2:0]

001010000

R39 (27h)

0100111

Mono out Mix (2)

RD2MO

RI2MO

RI2MOVOL[2:0]

001010000

R40 (28h)

0101000

LOUT2 volume

LO2VU

LO2ZC

LOUT2VOL[6:0]

001111001

R41 (29h)

0101001

ROUT2 volume

RO2VU

RO2ZC

ROUT2VOL[6:0]

001111001

R42 (2Ah)

0101010

MONOOUT volume

MOZC

MOUTVOL[6:0]

001111001

Table 9 Mapping of Program Registers

Please refer to the WM8973 datasheet for full details of the serial interface timing and all
register features.

Содержание WM8973-EV1B

Страница 1: ...WM8973 EV1M Evaluation Board User Handbook Rev 1 0...

Страница 2: ...E DESCRIPTION 12 SOFTWARE DOWNLOAD 12 SOFTWARE INSTALLATION 12 SOFTWARE OPERATION 12 DOWER DOWN AND INTERFACE CONTROL 16 DAC AND ADC CONTROL 17 VOLUME CONTROL 18 MIXER CONTROL 19 TONE CONTROL 20 SCHEM...

Страница 3: ...WM8973 EV1M w Rev 1 0 February 2005 3 EVALUATION SUPPORT 44 IMPORTANT NOTICE 45 ADDRESS 45...

Страница 4: ...ing items are available from Wolfson WM8973 EV1B Evaluation Board 6097_QFN32_EV1_REV1 WM8973 EV1S Control Software download from http www wolfsonmicro com WM8973 EV1M User Handbook download from http...

Страница 5: ...options for inputting digital data into the WM8973 evaluation board There is a coaxial input J19 via a standard phono connector or an optical input U3 via a standard optical receiver module A direct...

Страница 6: ...nalogue signal MIC Input Analogue signals applied to these connectors are AC coupled before being input to the WM8973 Table 3 Analogue Inputs Note When used in Master Mode an SPDIF signal must still b...

Страница 7: ...ES Figure 1 Interfaces HEADERS H1 SIGNAL H2 SIGNAL 1 2 MCLK 12 11 GND 3 4 GND 10 9 ADCDAT 5 6 DACDAT 8 7 GND 7 8 GND 6 5 ADCLRC 9 10 DACLRC 4 3 GND 11 12 GND 2 1 BCLK 13 14 BCLK 15 16 GND J31 SIGNAL 1...

Страница 8: ...4 20 VREF 5 5 BCLK 5 21 VMID 6 6 DACDAT 6 22 MICBIAS 7 7 DACLRC 7 23 RINPUT3 HPDETECT 8 8 ADCDAT 8 24 LINPUT3 J21 WM8973 PIN NAME J13 WM8973 PIN NAME 1 9 ADCLRC 1 25 RINPUT2 2 10 MONOOUT 2 26 LINPUT2...

Страница 9: ...new settings after SW6 has been pressed and released SW3 DATA FORMAT 1 2 3 4 5 6 DATA FORMAT 1 0 0 1 0 0 I2S Compatible default setting 1 0 0 0 0 1 24 bit Right Justified 1 0 0 0 0 0 Left Justified SW...

Страница 10: ...E MODE To operate the WM8973 in 2 wire mode jumper switch SW4 must be set so that pins 2 and 3 are SHORT The 2 wire serial interface becomes active on pins 31 SDIN and 32 SCLK The serial interface on...

Страница 11: ...NGG 1 0 NGAT 000000000 R21 15h 0010101 Left ADC volume LAVU LADCVOL 7 0 011000011 R22 16h 0010110 Right ADC volume RAVU RADCVOL 7 0 011000011 R23 17h 0010111 Additional control 1 TSDEN VSEL 1 0 DMONO...

Страница 12: ...nload to your hard drive SOFTWARE INSTALLATION Once the zip file has been downloaded to install the software Open the zip file Double click on the setup exe file Follow the on screen installation inst...

Страница 13: ...d as a quick start approach Pressing either of these buttons will power up the DAC ADC or Line signal paths in a known state as described in the following pages Important The CS8427 SPDIF decoder IC w...

Страница 14: ...d 3 SHORT Line Input Select Phono Socket SW5 SW7 Pins 2 and 3 SHORT Line Input Select Phono Socket SW8 SW9 Pins 2 and 3 SHORT Line Input Select Phono Socket SW27 SW28 Pins 2 and 3 SHORT Line Output Se...

Страница 15: ...ins 2 and 3 SHORT Line Input Select Phono Socket SW27 SW28 Pins 2 and 3 SHORT Line Output Select Phono Socket Table 11 ADC Setup Jumper Setup Slave Mode LINE SUBMIT SETUP By pressing the Line Setup bu...

Страница 16: ...e SPI Control Mode SW1 SW2 Pins 2 and 3 SHORT Line Input Select Phono Socket SW5 SW7 Pins 2 and 3 SHORT Line Input Select Phono Socket SW8 SW9 Pins 2 and 3 SHORT Line Input Select Phono Socket SW27 SW...

Страница 17: ...C and ADC Control The DAC and ADC Control panel is used to control the many DAC and ADC related features of the WM8973 Pressing the ADC and DAC Submit button will cause the settings shown on this pane...

Страница 18: ...lume Submit button does not have to be pressed to update the output volume level but will only have an effect on the output if the Volume Update bits are set Once changes are made to the Volume Update...

Страница 19: ...many signal mixing options offered by the WM8973 The volume sliders update in real time i e the Mixer Submit button does not have to be pressed to update the mixer volume level Pressing the Mixer Sub...

Страница 20: ...te in the Power Down and Interface Control panel After the 3D Select setting has been made and written to the WM8973 the ADC and DAC should be powered up Once any of the WM8973 default settings are ch...

Страница 21: ...WM8973 EV1M w Rev 1 0 February 2005 21 SCHEMATIC LAYOUT Figure 13 Functional Diagram...

Страница 22: ...WM8973 EV1M w Rev 1 0 February 2005 22 Figure 14 Digital Input...

Страница 23: ...WM8973 EV1M w Rev 1 0 February 2005 23 Figure 15 Software Control...

Страница 24: ...WM8973 EV1M w Rev 1 0 February 2005 24 Figure 16 Level Shift...

Страница 25: ...WM8973 EV1M w Rev 1 0 February 2005 25 Figure 17 Analogue Input...

Страница 26: ...WM8973 EV1M w Rev 1 0 February 2005 26 Figure 18 WM8973...

Страница 27: ...WM8973 EV1M w Rev 1 0 February 2005 27 Figure 19 Analogue Output...

Страница 28: ...WM8973 EV1M w Rev 1 0 February 2005 28 Figure 20 Power...

Страница 29: ...WM8973 EV1M w Rev 1 0 February 2005 29 WM8973 EV1B PCB LAYOUT Figure 21 Top Layer Silkscreen...

Страница 30: ...WM8973 EV1M w Rev 1 0 February 2005 30 Figure 22 Top Layer...

Страница 31: ...WM8973 EV1M w Rev 1 0 February 2005 31 Figure 23 Bottom Layer...

Страница 32: ...WM8973 EV1M w Rev 1 0 February 2005 32 Figure 24 Bottom Layer Silkscreen...

Страница 33: ...Jumper Switch 0 1 Center off VERTICAL SW1 2 SW4 5 SW7 9 SW27 28 SW36 10 4mm Non Insulated Panel Socket 16A J1 2 J4 5 J8 J10 J47 7 Phono Socket PCB mount BLACK J29 J39 40 3 Phono Socket PCB mount RED...

Страница 34: ...W3 1 B3F1000 SPNO PCB mount switch SW6 1 1 32mm PCB Test Terminal BLACK TP1 TP5 9 6 1 32mm PCB Test Terminal RED TP2 4 3 Unpop 1 32mm PCB Test Terminal TP10 1 TORX176 Digirtal Audio Optical Receiver U...

Страница 35: ...he DSP and could result in damage to either or both devices In most cases the DSP supplies will be set around 3V for low power portable applications The inputs to the level shift IC 74ALVC164245 have...

Страница 36: ...The digital inputs to the WM8973 have a CMOS threshold i e Logic High min DBVDDx0 7 Logic Low max DBVDDx0 3 These are met directly by the level shift IC outputs The jumpers on H2 should also be remove...

Страница 37: ...shown in Figure 30 If the DSP is running at a higher voltage e g 5V than the WM8973 the signals from the DSP platform should be connected to test points TP2 CSB TP4 SDIN and TP3 SCLK Connecting the hi...

Страница 38: ...WM8973 EV1M w Rev 1 0 February 2005 38 Figure 30 Full DSP Control with Equal Voltage Supplies for DSP and WM8973 Figure 31 Full DSP Control with Higher Voltage DSP Supply than WM8973...

Страница 39: ...to be applied to L RLINE_IN1 passed through the ADC looped into the DAC and output on the L ROUT outputs MONO OUT OUT3 LOUT2 ROUT2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ROUT1 LOUT1 1 Figure 32 Recommended ADC...

Страница 40: ...t Select Phono Socket SW8 SW9 Pins 2 and 3 SHORT Line Input Select Phono Socket SW27 SW28 Pins 2 and 3 SHORT Line Output Select Phono Socket Table 14 Loopback Setup Jumper Settings Slave Mode SOFTWARE...

Страница 41: ...E IN1 RLINE IN2 LLINE IN2 RLINE IN3 LLINE IN3 OPT _IN SPDIF_ IN SPDIF_ OUT H2 J8 5V J10 DCVDD 1 42V to 3 6V J47 HPVDD 1 8V to 3 6V J24 1 J31 1 J23 1 J20 1 J25 1 J18 1 J37 1 J34 1 J38 1 J35 1 J32 1 J33...

Страница 42: ...34 and J35 SHORT OUT signals are DC coupled SW3 1 2 3 4 5 6 DATA FORMAT 1 0 0 1 0 0 I2S Compatible SW4 Pins 1 and 2 SHORT 3 wire SPI Control Mode SW1 SW2 Pins 2 and 3 SHORT Line Input Select Phono Soc...

Страница 43: ...ings HARDWARE SETUP 1 Designator R50 should be populated with a 0R resistor 2 Switch SW8 should be set to the OFF centre position 3 Designator R49 should be populated with a 47K resistor 4 Connect spe...

Страница 44: ...tion or require technical support please contact Wolfson Microelectronics Applications group through the following channels Email apps wolfsonmicro com Telephone Apps 44 131 272 7070 Fax 44 131 272 70...

Страница 45: ...to result in a significant injury to the user A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the l...

Страница 46: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Cirrus Logic WM8973L 6097 FL32 M WM8973L 6097 FL32 M S...

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