WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 64

no-image

WM8978

Manufacturer Part Number
WM8978
Description
The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
WM8978CGEFL/RV
Manufacturer:
WOLFSON
Quantity:
10 000
Part Number:
WM8978G
Manufacturer:
SANYO
Quantity:
87 018
Company:
Part Number:
WM8978G
Manufacturer:
WM
Quantity:
115
Company:
Part Number:
WM8978GEFL,,7500,QFN32,WOLFSON,,,,16+
0
Part Number:
WM8978GEFL/RV
Manufacturer:
WOLFSON
Quantity:
9 870
Part Number:
WM8978GEFL/RV
Manufacturer:
WM
Quantity:
1 000
WM8978
w
Figure 32 Unused Input/Output Pin Tie-off Buffers
Table 48 Unused Output Pin Tie-off Options
A dedicated buffer is available for tying off unused analogue I/O pins as shown in Figure 32. 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 32 summarises the tie-off options for the speaker and mono output pins.
L/ROUT2EN/
OUT3/4EN
0
0
0
0
1
1
OUT3BOOST/
OUT4BOOST/
SPKBOOST
0
0
1
1
0
1
VROI
X
X
0
1
0
1
1kΩ tie-off to AVDD/2
30kΩ tie-off to AVDD/2
1kΩ tie-off to 1.5xAVDD/2
30kΩ tie-off to 1.5xAVDD/2
Output enabled (DC level=AVDD/2)
Output enabled (DC level=1.5xAVDD/2)
OUTPUT CONFIGURATION
PTD Rev 2.6 November 2005
Preliminary Technical Data
64