WM8980CGEFL/RV WOLFSON [Wolfson Microelectronics plc], WM8980CGEFL/RV Datasheet - Page 69
![no-image](/images/no-image-200.jpg)
WM8980CGEFL/RV
Manufacturer Part Number
WM8980CGEFL/RV
Description
Stereo CODEC with Speaker Driver and Video Buffer
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8980CGEFLRV.pdf
(123 pages)
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Pre-Production
w
Table 52 Disabled Outputs to VREF Resistance
Figure 35 Unused Input/Output Pin Tie-off Buffers
A dedicated buffer is available for tying off unused analogue I/O pins as shown in Figure 35. This
buffer can be enabled using the BUFIOEN register bit.
If the SPKBOOST, OUT3BOOST or OUT4BOOST bits are set, then the relevant outputs will be tied
to the output of the DC level shift buffer at 1.5xAVDD/2 when disabled.
Figure 35 summarises the tie-off options for the speaker and mono output pins.
R49
REGISTER
ADDRESS
0
BIT
VROI
LABEL
0
DEFAULT
VREF (AVDD/2 or 1.5xAVDD/2) to
analogue output resistance
0: approx 1k
1: approx 30 k
DESCRIPTION
PP, Rev 3.8, May 2012
WM8980
69
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