Advertisement
Quick Links
w
WM832x Customer Evaluation System Set-up Guide
INTRODUCTION
MAIN BOARD FEATURES
Bench Power Supply for
DBVDD power
+1.62V to +3.6V
DBVDD Source
Selection
LDO1, 2&3:
Outputs & Source
Selection
GPIO interface
Mini board
WM832x‐6246‐FL81‐M‐REV1
Containing WM832x device
and associated external
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up
This document is designed to help users setting up the WM832x customer evaluation system.
This document relates to the WM8321, WM8325 and WM8326 Power Management ICs.
at
http://www.wolfsonmicro.com/enews
DC-DC1, 2, 3&4 Outputs
& Source Selection
PVDD
Selection: USB
or Bench
LDO4, 5&6: Output
& Source Selection
Copyright 2011 Wolfson Microelectronics plc
WAN_0264
ICE ‐InstantConfig™
EEPROM circuit
External PC
USB Interface
GPIO
Interface
LDO7 to
LDO13:
Outputs &
Source
Selection
On Button
Backup Battery Supply
+1.5V to +3.6V
PVDD: Main Power
Input
+2.7V to +5.5V
September 2011, Rev 1.0
Advertisement
Subscribe to Our Youtube Channel
Related Manuals for Wolfson WM832 Series
Summary of Contents for Wolfson WM832 Series
- Page 1 PVDD Selection: USB PVDD: Main Power or Bench Input Mini board +2.7V to +5.5V WM832x‐6246‐FL81‐M‐REV1 LDO4, 5&6: Output Containing WM832x device & Source Selection and associated external WOLFSON MICROELECTRONICS plc September 2011, Rev 1.0 To receive regular email updates, sign up Copyright 2011 Wolfson Microelectronics plc http://www.wolfsonmicro.com/enews...
- Page 2 WAN_0264 Customer Information MINI BOARD – WM8321 SHOWN DC‐DC2 DC‐DC1 DC‐DC3 DC‐DC4 WM8321 shown Note: The maximum current capability of some DC-DC converters is 2.5A, therefore extra care should be taken when evaluating those DC-DC converters at full load.
- Page 3 WAN_0264 Customer Information DEVELOPMENT MODE HARDWARE SET-UP J10‐A & J10‐B J10‐A & J10‐B The InstantConfig™ EEPROM (ICE) allows system designers to modify and experiment with different start-up and control settings on the WM832x.
- Page 4 WAN_0264 Customer Information EVB EXTERNALLY POWERED FROM A USB CABLE ONLY +5V bench J9 J12 J12 USB_IF_PWR USB connector J20 ...
- Page 5 WAN_0264 Customer Information USING THE WM8325 AND WM8326 EVB J18 DC1VDD_SEL J19 DC2VDD_SEL WM8325 DC-DC2 and WM8326 DC-DC1&2 Converters maximum current capability is 2.5A. Therefore, it is recommended to remove jumpers J18 and/or J19 to isolate the mini board DCmVDD from the mother board DCmVDD.
- Page 6 WAN_0264 Customer Information /ON AND /RESET SET-UP /RESET /ON PIN AND /RESET PIN J13 - /RESET pin pull up to DBVDD.
- Page 7 WAN_0264 Customer Information LED1 ON STATE INDICATOR RESET LED1 indicates the status of the PMIC /RESET signal LED1 is a helpful indicator hard wired to the WM832x /RESET pin. Located on the Main Board, LED1 indicates the main device Power States, via /RESET assertion and de-assertion.
-
Page 8: Control Interface
WAN_0264 Customer Information CONTROL INTERFACE CIFMODE CIF_MODE CIF MODE Control Interface Mode selects between 2-wire I2C mode and 4-wire SPI mode. ... - Page 9 WAN_0264 Customer Information DBVDD POWER SOURCE DBVDD_SOURCE DBVDD_SOURCE DBVDD POWER SOURCE J21 - Allows DBVDD to come from various power sources, Bench Power Supply, DC-DC3, LDO1 or LDO7.
- Page 10 WAN_0264 Customer Information USER KEY Certain register bits are protected behind a User Key which locks down the functionality and only enables the protected bits to be written to if the User Key (Unlock) has been previously written. The user key is 9716h ...
- Page 11 WAN_0264 Customer Information LED2 also indicates an OTP Auto Program Error condition. Status LED function is a control setting that can be a pre-programmed ICE setting. GPIO SET-UP There are 12 general-purpose GPIO pins (GPIO1 – GPIO12) that can be configured as inputs or outputs, active high or active low, with optional on-chip pull-up or pull-down resistors.
- Page 12 WAN_0264 Customer Information POWER STATE TRANSITION Under typical operating conditions, the device is powered up and shut down under the control of the /ON pin = SW2 on the Main Board. ON Power state transition = momentarily press and hold SW2 push button for ~1 second (default). ...
- Page 13 WAN_0264 Customer Information HOW TO PROGRAM THE ICE USING WISCE WISCE™ interface for the ICE. The register bits associated with configuring the device, for a pre‐ defined system start‐up procedure, are isolated from the main register map. The WM832x will only use the ICE (EEPROM) in Development Mode. The WM832x cannot program the ICE (EEPROM) it can only read its contents. In Development Mode the WM832x will read the ICE and use the pre-programmed contents to configure the device to power-up the system as specified.
- Page 14 WAN_0264 Customer Information CONFIGURATION OF THE ICE USING WISCE™ The WM832x devices can only read the ICE contents though WISCE™ (Wolfson Interactive Setup and Configuration Environment) by selecting the appropriate WMDBxx device description to program the EEPROM. The configuration procedure is as below: Open WISCE™...
-
Page 15: Technical Support
WAN_0264 Customer Information TECHNICAL SUPPORT If you require more information or require technical support, please contact the nearest Wolfson Microelectronics regional office: http://www.wolfsonmicro.com/contact or one of our global distributors: http://www.wolfsonmicro.com/distribution September 2011, Rev 1.0 Customer Information... -
Page 16: Important Notice
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.
Need help?
Do you have a question about the WM832 Series and is the answer not in the manual?
Questions and answers