WM8510GEDS/RV Wolfson Microelectronics, WM8510GEDS/RV Datasheet - Page 45

• Manufacturer Part Number: WM8510GEDS/RV
• Description: Audio CODECs VolP MONO CODEC 28-pin
• Manufacturer: Wolfson Microelectronics

Specifications of WM8510GEDS/RV

• Operating Supply Voltage: - 0.3 V to + 7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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Table 37 Disabled Outputs to VREF Resistance
A dedicated buffer is available for tying off unused analogue I/O pins as shown in Figure 21. This
buffer can be enabled using the BUFIOEN register bit.
If the SPKBOOST or MONOBOOST 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.
Table 38 summarises the tie-off options for the speaker and mono output pins.
Figure 21 Unused Input/Output Pin Tie-off Buffers
Table 38 Unused Output Pin Tie-off Options
R49
SPKN/PEN
MONOEN/
REGISTER
ADDRESS
0
0
0
0
1
1
MONOBOOST/
0
SPKBOOST
BIT
0
0
1
1
0
1
VROI
LABEL
VROI
0
1
0
1
X
X
0
DEFAULT
1k Ω tieoff to AVDD/2
30k Ω tieoff to AVDD/2
1k Ω tieoff to 1.5xAVDD/2
30k Ω tieoff to 1.5xAVDD/2
Output enabled (DC level=AVDD/2)
Output enabled (DC level=1.5xAVDD/2)
OUTPUT CONFIGURATION
VREF (AVDD/2 or 1.5xAVDD/2) to
analogue output resistance
0: approx 1kΩ
1: approx 30 kΩ
PD, Rev 4.5, September 2008
DESCRIPTION
WM8510
45