WM8994 Datasheet, PDF (264/359 Pages) Wolfson Microelectronics plc – Multi-Channel Audio Hub CODEC for Smartphones

WM8994
Production Data
REGISTER BIT
LABEL
DEFAULT
DESCRIPTION
ADDRESS
R43 (2Bh) 8:6 IN1LP_MIXINL
000
IN1LP Pin (PGA Bypass) to MIXINL Gain and Mute
Input Mixer
_VOL [2:0]
000 = Mute
(5)
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB (see note below).
When IN1LP_MIXINL_BOOST is set, then the
maximum gain setting is increased to +15dB, ie. 111 =
+15dB.
Note that VMID_BUF_ENA must be set when using the
IN1LP (PGA Bypass) input to MIXINL.
2:0 IN2LRP_MIXIN
000
RXVOICE Differential Input (VRXP-VRXN) to MIXINL
L_VOL [2:0]
Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
Register 2Bh Input Mixer (5)
REFER TO
REGISTER
ADDRESS
R44 (2Ch)
Input Mixer
(6)
BIT
LABEL
DEFAULT
DESCRIPTION
8:6 IN1RP_MIXINR 000 IN1RP Pin (PGA Bypass) to MIXINR Gain and Mute
_VOL [2:0]
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB (see note below).
When IN1RP_MIXINR_BOOST is set, then the
maximum gain setting is increased to +15dB, ie. 111 =
+15dB.
Note that VMID_BUF_ENA must be set when using the
IN1RP (PGA Bypass) input to MIXINR.
2:0 IN2LRP_MIXIN
000
RXVOICE Differential Input (VRXP-VRXN) to MIXINR
R_VOL [2:0]
Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
Register 2Ch Input Mixer (6)
REFER TO
w
PD, April 2012, Rev 4.4
264