WM9713L_06 WOLFSON [Wolfson Microelectronics plc], WM9713L_06 Datasheet - Page 36

• Manufacturer Part Number: WM9713L_06
• Description: AC 97 Audio + Touchpanel CODEC
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM9713L
AUXILIARY DAC
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Table 19 VXDAC Control
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 not in use the auxillary DAC can be powered down using the Powerdown register bit AUXDAC
(register 3Ch, bit 11).
3Ch
Powerdown (1)
18h
VXDAC Output
Control
REGISTER
ADDRESS
12
15
14:12
11
10:8
7
6:4
BIT
VXDAC
V2H
V2HVOL
V2S
V2SVOL
V2M
V2MVOL
LABEL
1
1
010
(0dB)
1
010
(0dB)
1
010
(0dB)
DEFAULT
VXDAC powerdown bit
1: OFF, 0: ON
Mute VXDAC path to headphone
mixer
1: Mute, 0: No mute (ON)
VXDAC to headphone mixer gain
000: +6dB
… (3dB steps)
111: -15dB
Mute VXDAC path to speaker mixer
1: Mute, 0: No mute (ON)
VXDAC to speaker mixer gain
000: +6dB
… (3dB steps)
111: -15dB
Mute VXDAC path to mono mixer
1: Mute, 0: No mute (ON)
VXDAC to mono mixer gain
000: +6dB
… (3dB steps)
111: -15dB
DESCRIPTION
PP Rev 3.0 June 2006
Pre-Production
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