WM8944B Datasheet, PDF (99/165 Pages) Cirrus Logic – Mono Low-Power CODEC with Video Buffer

WM8944B
SOFTWARE RESET AND DEVICE ID
The WM8944B can be reset by writing to Register R0. This is a read-only register, and the contents of
R0 will not be affected by writing to this Register.
The Device ID can be read back from Register R0. The Chip Revision ID can be read back from
Register 1, as described in Table 70.
REGISTER BIT
ADDRESS
LABEL
R0 (00h)
Software
Reset/Chip
ID 1
15:0
SW_RESET
[15:0]
R1 (01h)
Revision
Number
3:0 CHIP_REV [3:0]
Table 70 Chip Reset and ID
DEFAULT
6264h
0h
DESCRIPTION
Writing to this register resets all registers
to their default state.
Reading from this register will indicate
device family ID 6264h.
Reading from this register will indicate
the Revision ID. (Read only)
Rev 4.3
99