wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 116
wm8351
Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8351.pdf
(328 pages)
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WM8351
14.5 CUSTOM MODES
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The WM8351 provides three custom start-up modes. These are selected by setting the CONF1 and
CONF0 pins = 01, 10 or 11. The custom mode start-up sequences define the following parameters:
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In Development Mode, the RECONFIG_AT_ON register bit (see Section 14.4.2) may be used to
control the device configuration behaviour. In Custom Modes 01, 10 or 11, the default setting
(RECONFIG_AT_ON = 1) must always be used. Setting this bit to 0 may result in erroneous
behaviour and deviation from the custom configuration settings.
The custom modes do not allow configuring the WM8351 in the OFF state. As a result, evaluation
and debugging in custom modes is limited.
Polarity of the ON pin (Active low or high)
Configuration of the USB power source
Configuration of the Watchdog timer mode
Configuration of the Control Interface mode
Configuration of the 32kHz oscillator (enabled or disabled)
Configuration of the real-time-clock (enabled or disabled)
Configuration of LDO1
Selection of crystal oscillator detect mode (see Section 14.3.6)
Configuration of the voltage settings and start-up timeslots for DC-DC and LDO supplies
Configuration of GPIO pins
PD, June 2009, Rev 4.1
Production Data
116
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