wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 72

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8941
w
Notes:
1. This step enables the internal device bias buffer and the VMID buffer for unassigned
2. Choose the value of VMIDSEL bits based on the startup time (VMIDSEL = 10 for the slowest
In addition to the power on sequence, it is recommended that the zero cross functions are used when
changing the volume in the PGAs to avoid any audible pops and clicks.
inputs/outputs. This will provide a startup reference for all inputs and outputs. This will cause the
inputs and outputs to ramp towards VMID in a way that is controlled and predictable.
startup, VMIDSEL = 11 for the fastest startup). Startup time is defined by the value of the
VMIDSEL bits (the reference impedance) and the external decoupling capacitor on VMID.
PD, Rev 4.0, August 2008
Production Data
72