WM8510GEDSSLASHV datasheet(43/81 Pages) WOLFSON

43 / 81 page

Pre-Production

WM8510

PD Rev 4.1 December 2006

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

DAC2MONO

Output of DAC to mono mixer input

0 = not selected

1 = selected

BYP2MONO

Bypass path (output of input boost

stage) to mono mixer input

0 = non selected

1 = selected

MIC2_2MONO

Output of MIC2 amplifier to mono

mixer input:

0 = not selected

1 = selected

R56

Mono mixer

control

MONOMUTE

0=No mute

1=Output muted. During mute the

mono output will output VMID which

can be used as a DC reference for a

headphone out.

R40

Bypass path

attenuation

control

MONOATTN

Attenuation control for bypass path

(output of input boost stage) to mono

mixer input

0 = 0dB

1 = -10dB

Table 35 Mono Mixer Control

ENABLING THE OUTPUTS

Each analogue output of the WM8510 can be separately enabled or disabled. The analogue mixer

associated with each output has a separate enable. All outputs are disabled by default. To save

power, unused parts of the WM8510 should remain disabled.

Outputs can be enabled at any time, but it is not recommended to do so when BUFIO is disabled

(BUFIOEN=0), as this may cause pop noise (see “Power Management” and “Applications

Information” sections).

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

BUFIOEN

Unused input/output tie off buffer enable

BUFDCOPEN

Output stage 1.5xAVDD/2 driver enable

Power

management

BIASEN

Analogue amplifiers bias enable

SPKMIXEN

Speaker Mixer enable

MONOMIXEN

Mono mixer enable

SPKPEN

SPKOUTP enable

SPKNEN

SPKOUTN enable

Power

management

MONOEN

MONOOUT enable

Note: All “Enable” bits are 1 = ON, 0 = OFF

Table 36 Output Stages Power Management Control

UNUSED ANALOGUE INPUTS/OUTPUTS

Whenever an analogue input/output is disabled, it remains connected to a voltage source (either

AVDD/2 or 1.5xAVDD/2 as appropriate) through a resistor. This helps to prevent pop noise when the

output is re-enabled. The resistance between the voltage buffer and the output pins can be controlled

using the VROI control bit. The default impedance is low, so that any capacitors on the outputs can

charge up quickly at start-up. If a high impedance is desired for disabled outputs, VROI can then be

set to 1, increasing the resistance to about 30k

Ω.

WM8510GEDS/V bảng dữ liệu(PDF) 43 Page - Wolfson Microelectronics plc

WM8510GEDS/V bảng dữ liệu(HTML) 43 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

bảng dữ liệu tải về

Link URL