WM8958 Datasheet, PDF (53/377 Pages) Wolfson Microelectronics plc – Multi-Channel Audio Hub CODEC for Smartphones

Pre-Production
WM8958
REGISTER
ADDRESS
R21
(0015h)
Input Mixer
(1)
R41
(0029h)
Input Mixer
(3)
R43
(002Bh)
Input Mixer
(5)
BIT
LABEL
DEFAULT
DESCRIPTION
7 IN1LP_MIXINL_BOOST
8 IN2L_TO_MIXINL
7 IN2L_MIXINL_VOL
5 IN1L_TO_MIXINL
4 IN1L_MIXINL_VOL
2:0 MIXOUTL_MIXINL_VOL
[2:0]
8:6 IN1LP_MIXINL_VOL
[2:0]
0
0
0
0
0
000
(Mute)
000
(Mute)
IN1LP Pin (PGA Bypass) to
MIXINL Gain Boost.
This bit selects the maximum gain
setting of the IN1LP_MIXINL_VOL
register.
0 = Maximum gain is +6dB
1 = Maximum gain is +15dB
IN2L PGA Output to MIXINL Mute
0 = Mute
1 = Un-Mute
IN2L PGA Output to MIXINL Gain
0 = 0dB
1 = +30dB
IN1L PGA Output to MIXINL Mute
0 = Mute
1 = Un-Mute
IN1L PGA Output to MIXINL Gain
0 = 0dB
1 = +30dB
Record Path MIXOUTL to MIXINL
Gain and Mute
000 = Mute
001 = -12dB
010 = -9dB
011 = -6dB
100 = -3dB
101 = 0dB
110 = +3dB
111 = +6dB
IN1LP Pin (PGA Bypass) to
MIXINL Gain and Mute
000 = Mute
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.
w
PP, August 2012, Rev 3.4
53