WM1811A datasheet(43/328 Pages) WOLFSON

tên linh kiện	WM1811A

Giải thích chi tiết về linh kiện	Multi-Channel Audio Hub CODEC for Smartphones

PDF	328 Pages

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Production Data

WM1811A

PD, November 2013, Rev 4.1

The line input and voice CODEC input configurations are illustrated in Figure 11 through to Figure 14.

Figure 11 IN1LN or IN1RN as Line Inputs

Figure 12 IN2LN or IN2RN as Line Inputs

Figure 13 IN1LP or IN1RP as Line Inputs

Figure 14 IN2LP or IN2RP as Line Inputs

INPUT PGA ENABLE

The Input PGAs are enabled using register bits IN1L_ENA, IN2L_ENA, IN1R_ENA and IN2R_ENA,

as described in Table 2. The Input PGAs must be enabled for microphone input on the respective

input pins, or for line input on the inverting input pins IN1LN, IN1RN, IN2LN, IN2RN.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R2 (0002h)

Power

Management

(2)

IN2L_ENA

IN2L Input PGA Enable

0 = Disabled

1 = Enabled

IN1L_ENA

IN1L Input PGA Enable

0 = Disabled

1 = Enabled

IN2R_ENA

IN2R Input PGA Enable

0 = Disabled

1 = Enabled

IN1R_ENA

IN1R Input PGA Enable

0 = Disabled

1 = Enabled

Table 2 Input PGA Enable

For normal operation of the input PGAs, the reference voltage VMID and the bias current must also be

enabled. See “Reference Voltages and Master Bias” for details of the associated controls VMID_SEL

and BIAS_ENA.

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