WM9711_06 WOLFSON [Wolfson Microelectronics plc], WM9711_06 Datasheet - Page 27
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WM9711_06
Manufacturer Part Number
WM9711_06
Description
Low Power Audio CODEC for Portable Applications
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM9711_06.pdf
(65 pages)
- Current page: 27 of 65
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Production Data
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AUXILIARY DAC
AUXDAC is a simple 12-bit mono DAC. It can be used to generate DC signals (with the numeric input
written into a control register), or AC signals such as telephone-quality ring tones or system beeps
(with the input signal supplied through an AC-Link slot). In AC mode (XSLE = 1), the input data is
binary offset coded; in DC mode (XSLE = 0), there is no offset.
The analogue output of AUXDAC is routed directly into the output mixers. The signal gain into each
mixer can be adjusted at the mixer inputs using control register 12h. In slot mode (XSLE = 1), the
AUXDAC also supports variable sample rates (See “Variable Rate Audio” section).
When the auxiliary DAC is not used, it can be powered down by setting AXE = 0. This is also the
default setting.
Table 14 AUXDAC Control
64h
AUDAC Input
Control
12h
AUXDAC Output
Control
REGISTER
ADDRESS
15
14:12
11:0
15
14:12
11
10:8
7
6:4
0
BIT
XSLE
AUXDAC
SLT
AUXDAC
VAL
A2H
A2HVOL
A2S
A2SVOL
A2P
A2PVOL
AXE
LABEL
0
000
000h
1
010
(0dB)
1
010
(0dB)
1
010
(0dB)
0
DEFAULT
AUXDAC input selection
0: from AUXDACVAL (for DC signals)
1: from AC-Link slot selected by
AUXDACSLT (for AC signals)
AUXDAC Input Selection
000 – Slot 5, bits 8-19 (with XSLE=1)
001 – Slot 6, bits 8-19 (with XSLE=1)
010 – Slot 7, bits 8-19 (with XSLE=1)
011 – Slot 8, bits 8-19 (with XSLE=1)
100 – Slot 9, bits 8-19 (with XSLE=1)
101 – Slot 10, bits 8-19 (with XSLE=1)
110 – Slot 11, bits 8-19 (with XSLE=1)
111 – RESERVED (do not use)
AUXDAC Digital Input (with XSLE=0)
000h: minimum
FFFh: full-scale
Mute AUXDAC path to headphone
mixer
1: Mute, 0: No mute (ON)
AUXDAC to headphone mixer gain
000: +6dB
… (3dB steps)
111: -15dB
Mute AUXDAC path to speaker mixer
1: Mute, 0: No mute (ON)
AUXDAC to speaker mixer gain
000: +6dB
… (3dB steps)
111: -15dB
Mute AUXDAC path to phone mixer
1: Mute, 0: No mute (ON)
AUXDAC to phone mixer gain
000: +6dB
… (3dB steps)
111: -15dB
0: AUXDAC off
1: AUXDAC enabled
DESCRIPTION
PD Rev 4.3 August 2006
WM9711L
27
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