WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 45

• Manufacturer Part Number: WM8985GEFL
• Description: Audio CODECs Multimedia CODEC with Class D HP
• Manufacturer: Wolfson Microelectronics

Specifications of WM8985GEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
Figure 21 ALC Normal Mode Operation
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Table 20 ALC Control Registers
NORMAL MODE
When the ALC is disabled, the input PGA remains at the last controlled value of the ALC. An input
gain update must be made by writing to the INPPGAVOLL/R register bits.
In normal mode, the ALC will attempt to maintain a constant signal level by increasing or decreasing
the gain of the PGA. The following diagram shows an example of this.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
… (time doubles with every step)
1010
23.2ms
DESCRIPTION
PD, Rev 4.6, July 2009
186ms
WM8985
1.348s
45