WM8711BL-6061 FL24 M Example Configurations

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WM8711BL-6061-FL24-M-REV1
Example Configurations
DOC TYPE:
EXAMPLE CONFIGURATIONS
BOARD REFERENCE:
WM8711BL-6061-FL24-M-Rev1
BOARD TYPE:
Customer Mini Board
WOLFSON DEVICE(S):
WM8711BL
DATE:
March 2008
DOC REVISION:
1.0
INTRODUCTION
The WM8711BL-6061-FL24-M mini-board is compatible with the 6061-EV1 customer evaluation
board and together provide a complete hardware platform for evaluation of the WM8711BL. The
WM8711BL mini-board can also be used independently and connected directly to a processor board
using flying wires or appropriate headers. This document will cover both, but performance data will be
based on the Wolfson system with 6061-EV1 main board. Configurations covered are listed below:
•
DAC Playback to 32Ω Headphone on L/RHPOUT
•
Analogue bypass (LINE in to LINE out)
This document should be used as a starting point for evaluation of WM8711BL. It will not cover every
possible usage mode.
Assumptions:
1.
The user is familiar with the 6061-EV1 main board and that the board is configured
correctly for the path of interest (see related documents below)
2.
The user has setup WISCE as per instruction and has control of the DUT (register settings
provided in this document)
Related documents:
1.
WM8711BL-6061-FL24-M-REV1_Schematic_Layout.pdf
2.
6061-EV1_Schematic_Layout.pdf
3.
WISCE Quick Start Guide.pdf
WOLFSON MICROELECTRONICS plc
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March 2008, Rev 1.0
Copyright ©2008 Wolfson Microelectronics plc
WM8711BL-6061-FL24-M-REV1 Evaluation Board
Customer Information
TABLE OF CONTENTS
INTRODUCTION............................................................................................................. 1
TABLE OF CONTENTS.................................................................................................. 2
BOARD CONFIGURATION STAND-ALONE ................................................................. 3
BOARD CONFIGURATION WITH 6061-EV1 MAIN BOARD......................................... 5
DAC PLAYBACK TO 32Ω HEADPHONE ON L/RHPOUT ........................................................5
ANALOGUE BYPASS (LINE IN TO LINE OUT) ........................................................................7
APPLICATION SUPPORT.............................................................................................. 9
IMPORTANT NOTICE .................................................................................................. 10
ADDRESS: ................................................................................................................... 10
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Customer Information
BOARD CONFIGURATION STAND-ALONE
The WM8711BL mini board can be used a stand-alone module for direct connection to a processor
board via flying leads or dedicated headers. This section will detail important considerations and
provide all information required to do this without risking damage to the DAC.
CONNECTION DIAGRAM
Figure 1 shows the connections required to power-up and control the WM8711BL mini board.
Connections can be made through flying leads or with 2.54mm pitch headers compatible with those
on the mini board. Additionally, MICIN can be configured to use the onboard silicon microphone, and
the headphone Jack socket provides an AC-coupled headphone output.
Please refer to table 1 for further details on external I/O connections.
Control IF Analogue Inputs
Crystal /
Master CLK Input
XTI/MCLK
DCVDD 1.42-3.6V
DCVDD
DBVDD 1.8-3.6V
Core CLK Output
DBVDD
CLKOUT
BCLK
AVDD
ROUT
LOUT
AVDD 1.8-3.6V
L/R HPOUT
AC coupled
Audio IF
HPVDD 1.8V-3.6V
Analogue Outputs
Figure 1 WM8711BL Mini Board Connection Diagram
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Customer Information
I/O Table
SIGNAL
BOARD REFERENCE
IMPORTANT NOTES
Voltage Supplies
AVDD
H3: pin 16
AVDD=1.8V to 3.6V
HPVDD
H2: pin 10
HPVDD=1.8V to 3.6V
DCVDD
H1: pin 3
DCVDD=1.42V to 3.6V
DBVDD
H1: pin 5
DBVDD=1.8V to 3.6V
AGND / HPGND
/ DGND
Common GND:
H1: pin 4
H3: pin 13
H3: pin 17
Analogue and digital grounds must always be within
0.3V of each other
H4: pin 21
2-wire (default): MODE to GND via R8
Controlled via SP2
3-wire: MODE to DBVDD via SP2
Control Interface
MODE
CSB
H4: pin 22
2-wire address 0x34h (default): CSB to GND via R7
Controlled via SP1
2-wire address 0x36h: CSB to DBVDD via SP1
SDIN
H4: pin 23
SCLK
H4: pin 24
All control interface signals should swing between
DGND and DBVDD
Crystal / Master Clock
XTI/MCLK
H1: pin 1
Signal should swing between DGND and DBVDD
CLKOUT
H1: pin 6
Buffered Core CLK or Core CLK/2
Audio Interface
BCLK
H1: pin 7
DACDAT
H2: pin 8
DACLRC
H2: pin 9
All audio interface signals should swing between
DGND and DBVDD
Analogue Inputs
LLINEIN
H4: pin 20
Full scale swing should not exceed AVDD/3.3 Vrms
RLINEIN
H4: pin 19
Full scale swing should not exceed AVDD/3.3 Vrms
LOUT
H3: pin 14
Line output (left channel)
ROUT
H3: pin 15
Line output (right channel)
LHPOUT
H2: pin 11
HP output (left channel) or
left channel of AC coupled HP output (J1)
RHPOUT
H2: pin 12
HP output (right channel) or
right channel of AC coupled HP output (J1)
Analogue Outputs
Table 1 I/O Configuration
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Customer Information
BOARD CONFIGURATION WITH 6061-EV1 MAIN BOARD
This section focuses on evaluation of the WM8711BL mini board in combination with the 6061-EV1
main board. This system is the reference platform for measurement data contained in this document.
Please note that only a limited number of usage modes will be covered.
DAC PLAYBACK TO 32Ω HEADPHONE ON L/RHPOUT
The following section details board configuration for stereo DAC playback to 32Ω headphone on
L/RHPOUT. It should be noted that L/RHPOUT outputs are routed to headphone jack sockets on the
WM8711BL mini-board and 6061-EV1 main-board, and also to phono connectors on the main-board.
For the purpose of this test the main-board phono connectors were used with 32Ω loads applied.
AGND
VMID
AVDD
SCLK
MODE
DGND
DBVDD
(3.3V)
DCVDD
(1.5V)
CLKOUT
XTI/MCLK
XTO
DIGTAL AUDIO
INTERFACE
CSB
SDIN
EVALUATION BOARD SETUP
BOARD CONFIGURATION
USB
HP L/R
Digital Data In
S/PDIF
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Customer Information
`
REGISTER SETTINGS
Register settings provided below are simply the minimum requirement to configure the desired path
and have not in any way been optimised for pops and clicks.
REG
INDEX
DATA
VALUE
R15
0x000
RESET
R2
0x079
Left Headphone Out: LRHPBOTH=0, LZCEN=0, LHPVOL=111_1001
R3
0x079
Right Headphone Out: RLHPBOTH=0, RZCEN=0, RHPVOL=111_1001
R4
0x010
Analogue Audio Path Control: SIDEATT=00, SIDETONE=0, DACSEL=1,
BYPASS=0, INSEL=0, MUTEMIC=0, MICBOOST=0
R5
0x000
Digital Audio Path Control: HPOR=0, DACMU=0, DEEMPH=00,
ADCHPD=0
R6
0x007
Power Down Control: POWEROFF=0, CLKOUTPD=0, OSCPD=0,
OUTPD=0, DACPD=0, ADCPD=1, MICPD=1, LINEINPD=1
R7
0x00A
Digital Audio Interface Format: BCLKINV=0, MS=0, LRSWAP=0, LRP=0,
IWL=10, FORMAT=10
R8
0x000
Sampling Control: CLKODIV2=0, CLKIDIV2=0, SR=0000, BOSR=0,
USB/NORMAL=0
R9
0x001
Active Control: Active=1
COMMENT
THD+N V AMPLITUDE PERFORMANCE CURVE
Audio Precision
WM8711BL-6061-FL24-M-REV1 DAC Signal Path (to HP_Out) THD+N v Amplitude
Signal = 997kHz; 24-bit I2S; 256fs (fs=48kHz); Slave Mode
-35
-40
-45
-50
-55
-60
d
B
r
A
-65
-70
-75
-80
-85
-90
-95
-100
-105
-110
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
2
2
Anlr.THD+N Ampl
Anlr.THD+N Ampl
Left
Left
HPL
HPR
System AP2
Board Revision: 1.0
Device Date Code: WM8711B 69ABBD6
Input Path: SPDIF_IN
Input Signal: 997Hz; 0dBFS; 24-bit; 256fs (fs=48kHz)
Output Path: HPL/R (32R Load)
Output Reference: 0dBrA = -0.195 dBV
Supplies: AVDD=DBVDD=DCVDD=HPVDD=+3.3V
BW filter : As stated
Additional Filtering: A-weight
Dither: None
RMS or Averaging: Averaging
DAC_THD+NvAmp_HP_32R.at27
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Customer Information
WM8711BL-6061-FL24-M-REV1 Evaluation Board
ANALOGUE BYPASS (LINE IN TO LINE OUT)
The following section details board configuration for analogue bypass (Line In to Line Out) from
L/RLINEIN to L/ROUT via the output mixers.
Note: In this case both L/RLINEIN inputs and L/ROUT outputs located on the 6061-EV1 main board
were used.
EVALUATION BOARD SETUP
BOARD CONFIGURATION
L/R LINE IN
USB
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L/R LINE OUT
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Customer Information
REGISTER SETTINGS
Register settings provided below are simply the minimum requirement to configure the desired path
and have not in any way been optimised for pops and clicks.
REG
INDEX
DATA
VALUE
R15
0x000
RESET
R4
0x00A
Analogue Audio Path Control: SIDEATT=00, SIDETONE=0, DACSEL=0,
BYPASS=1, INSEL=0, MUTEMIC=1, MICBOOST=0
R6
0x00E
Power Down Control: POWEROFF=0, CLKOUTPD=0, OSCPD=0,
OUTPD=0, DACPD=1, ADCPD=1, MICPD=1, LINEINPD=0
R9
0x001
Active Control: Active=1
COMMENT
THD+N V AMPLITUDE PERFORMANCE CURVE
WM8711BL-6061-FL24-M-REV1 -- Analogue BypassTHD+N v Amplitude (L/RIN1, L/ROUT1)
03/05/08 11:06:52
-30
-40
-50
d
B
r
-60
A
-80
-70
-90
-100
-110
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
+0
+5
dBV
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
2
2
Anlr.THD+N Ampl
Anlr.THD+N Ampl
Left
Left
LINEOUTL
LINEOUTR
System = AP2
Board Revision: 2.0
Device Datecode: WM8711B 69ABBD6
Input Signal: 997Hz; 0dBV;
Reference Levels: 0dBrA = -7.49dBV
Supplies: AVDD=HPVDD=DCVDD=DBVDD = +3.3V
Input Signal Path: L/R IN
Output Signal Path: L/R OUT
BW Filtering: As stated
Additional Filtering Type: A-weight
Dither = Off
RMS or Averaging = Average
THD+N_vs_Amplitude_LRINPUT1_to_LROUT1_Bypass.at27
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Customer Information
APPLICATION SUPPORT
If you require more information or require technical support, please contact the Wolfson
Microelectronics Applications group through the following channels:
Email:
Telephone Apps:
Fax:
Mail:
[email protected]
+44 (0) 131 272 7070
+44 (0) 131 272 7001
Applications Engineering at the address on the last page
or contact your local Wolfson representative.
Additional information may be made available on our web site at:
http://www.wolfsonmicro.com
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Customer Information
IMPORTANT NOTICE
Wolfson Microelectronics plc (“Wolfson”) products and services are sold subject to Wolfson’s terms and conditions of sale, delivery
and payment supplied at the time of order acknowledgement.
Wolfson warrants performance of its products to the specifications in effect at the date of shipment. Wolfson reserves the right to
make changes to its products and specifications or to discontinue any product or service without notice. Customers should therefore
obtain the latest version of relevant information from Wolfson to verify that the information is current.
Testing and other quality control techniques are utilised to the extent Wolfson deems necessary to support its warranty. Specific
testing of all parameters of each device is not necessarily performed unless required by law or regulation.
In order to minimise risks associated with customer applications, the customer must use adequate design and operating safeguards
to minimise inherent or procedural hazards. Wolfson is not liable for applications assistance or customer product design. The
customer is solely responsible for its selection and use of Wolfson products. Wolfson is not liable for such selection or use nor for
use of any circuitry other than circuitry entirely embodied in a Wolfson product.
Wolfson’s products are not intended for use in life support systems, appliances, nuclear systems or systems where malfunction can
reasonably be expected to result in personal injury, death or severe property or environmental damage. Any use of products by the
customer for such purposes is at the customer’s own risk.
Wolfson does not grant any licence (express or implied) under any patent right, copyright, mask work right or other intellectual
property right of Wolfson covering or relating to any combination, machine, or process in which its products or services might be or
are used. Any provision or publication of any third party’s products or services does not constitute Wolfson’s approval, licence,
warranty or endorsement thereof. Any third party trade marks contained in this document belong to the respective third party owner.
Reproduction of information from Wolfson datasheets is permissible only if reproduction is without alteration and is accompanied by
all associated copyright, proprietary and other notices (including this notice) and conditions.
Wolfson is not liable for any
unauthorised alteration of such information or for any reliance placed thereon.
Any representations made, warranties given, and/or liabilities accepted by any person which differ from those contained in this
datasheet or in Wolfson’s standard terms and conditions of sale, delivery and payment are made, given and/or accepted at that
person’s own risk. Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by
any person.
ADDRESS:
Wolfson Microelectronics plc
Westfield House
26 Westfield Road
Edinburgh
EH11 2QB
United Kingdom
Tel :: +44 (0)131 272 7000
Fax :: +44 (0)131 272 7001
Email :: [email protected]
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