WM9714L_06 WOLFSON [Wolfson Microelectronics plc], WM9714L_06 Datasheet - Page 33

• Manufacturer Part Number: WM9714L_06
• Description: AC 97 Audio CODEC
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Pre-Production
VOICE DAC
w
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).
Table 19 VXDAC Control
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
WM9714L
33