WM9714L datasheet(40/120 Pages) CIRRUS

40 / 120 page

WM9714L

Rev 4.0

3D STEREO ENHANCEMENT

The 3D stereo enhancement function artificially increases the separation between the left and right

channels by amplifying the (L-R) difference signal in the frequency range where the human ear is

sensitive to directionality. The programmable 3D depth setting controls the degree of stereo

expansion introduced by the function. Additionally, the upper and lower limits of the frequency range

used for 3D enhancement can be selected using the 3DFILT control bits.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

40h

General

Purpose

3DE

(disabled)

3D Enhancement Control

1 = Enabled

0 = Disabled

1Eh

DAC 3D

Control

3DLC

3D Lower Cut-off Frequency Control

1 = High (500Hz at 48kHz sampling)

0 = Low (200Hz at 48kHz sampling)

3DUC

3D Upper Cut-off Frequency Control

1 = Low (1.5kHz at 48kHz sampling)

0 = High (2.2kHz at 48kHz sampling)

3:0

3DDEPTH

0000

3D Depth Control

0000 = 0%

… (6.67% steps)

1111 = 100%

Table 18 Stereo Enhancement Control

Note:

All cut-off frequencies change proportionally with the DAC sample rate.

VOICE DAC

VXDAC is a 16-bit mono DAC intended for playback of Rx voice signals input via the PCM interface.

Performance has been optimised for operating at 8ks/s or 16ks/s. The VXDAC will function at other

sample rates up to 48ks/s, but this is not recommended.

The analogue output of VXDAC is routed directly into the output mixers. The signal gain into each

mixer can be adjusted at the mixer inputs using control register 18h.

When not in use the VXDAC can be powered down using the Powerdown register bit VXDAC (register

3Ch, bit 12).

WM9714L Datasheet(PDF) 40 Page - Cirrus Logic

WM9714L Datasheet(HTML) 40 Page - Cirrus Logic

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 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL