wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 112

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8903
CHIP RESET AND DEVICE ID
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The WM8903 can be reset by writing to Register 0. This is a read-only register field, and the contents
will not be affected by writing to this Register.
The Device ID can be read back from Register 0. The Chip Revision ID can be read back from
Register 1, as described in Table 76.
Table 76 Chip Reset and ID
R0 (00h)
SW Reset
and ID
R1 (01h)
Revision
Number
REGISTER
ADDRESS
15:0
3:0
BIT
SW_RST_DE
C_ID1 [15:0]
CHIP_REV
[3:0]
LABEL
8903h
0010b
DEFAULT
Writing to this register resets all
registers to their default state.
Reading from this register will indicate
Device ID 8903h.
Reading from this register will indicate
the Revision ID.
DESCRIPTION
PP, Rev 3.1, August 2009
Pre-Production
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