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WM8994ECS/R bảng dữ liệu(PDF) 245 Page - Cirrus Logic

tên linh kiện WM8994ECS/R
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WM8994ECS/R bảng dữ liệu(HTML) 245 Page - Cirrus Logic

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WM8994
Rev 4.6
245
SOFTWARE RESET AND DEVICE ID
The device ID can be read back from register R0. Writing to this register will reset the device.
The software reset causes most control registers to be reset to their default state. Note that the
Control Write Sequencer registers R12288 (3000h) through to R12799 (31FFh) are not affected by a
software reset; the Control Sequences defined in these registers are retained unchanged.
The status of the WM8994 digital I/O pins following a software reset is described in Table 141.
The device revision can be read back from register R256.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R0 (0000h)
Software
Reset
15:0
SW_RESET
[15:0]
8994h
Writing to this register resets all registers
to their default state. (Note - Control
Write Sequencer registers are not
affected by Software Reset.)
Reading from this register will indicate
device family ID 8994h.
R256
(0100h)
Chip
Revision
3:0
CHIP_REV [3:0]
Chip revision
Table 144 Chip Reset and ID



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