WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 56
![no-image](/images/no-image-200.jpg)
WM8959
Manufacturer Part Number
WM8959
Description
Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8959.pdf
(155 pages)
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WM8959
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OUTPUT SIGNAL PATH
Left Line Input to Speaker
Rx Voice -
Left Line Input to Left Output Mixer
Left MIC
AINLMUX output
AINRMUX output
Right MIC
Right Line Input to Right Output Mixer
Rx Voice +
Right Line Input to Speaker
DAC_MUTEMODE,
DAC_MUTERATE,
DAC_SB_FILT,
DAC_MUTE,
DEEMP[1:0]
The WM8959 output routing and mixers provide a high degree of flexibility, allowing operation of
many simultaneous signal paths through the device to various analogue outputs. The outputs provide
many combinations of headphone, loudspeaker and single-ended line drivers. See “Analogue
Outputs” for further details of these outputs.
The WM8959 output signal paths and control registers are illustrated in Figure 29.
Figure 29 Control Registers for Output Signal Path
DAC
DAC
MAIN REGISTER BIT REFERENCE
READBACK AVAILABLE
REGISTER BIT ALSO REFERENCED
ELSEWHERE IN DIAGRAM
DACL
DACR
en
en
RR12ROVOL[2:0]
LR12LOVOL[2:0]
RL12ROVOL[2:0]
RLI3ROVOL [2:0]
LL12LOVOL[2:0]
RRI3ROVOL[2:0]
LRI3LOVOL[2:0]
RRBROVOL[2:0]
LRBLOVOL[2:0]
RLBROVOL[2:0]
LLBLOVOL[2:0]
LI3LOVOL[2:0]
LOMIX_ENA
ROMIX_ENA
OUTPUT MIXERS
en
en
ROMIX
LOMIX
(LDLO and LDSPK must not be
enabled at the same time)
(RDRO and RDSPK must not be
enabled at the same time)
+
+
LOPGA_ENA
ROPGA_ENA
LI3LO
LRI3LO
LL12LO
LR12LO
LRBLO
LLBLO
LDLO
RDRO
RRBRO
RLBRO
RR12RO
RL12RO
RLI3RO
RRI3RO
LOPGA
ROPGA
en
en
LOPGAVOL
[6:0]
ROPGAVOL
[6:0]
RROPGARON
RROPGAROP
ROPRON
RLOPGARON
LROPGALON
LLOPGALON
LLOPGALOP
ROPGASPK
LOPGASPK
RR12ROP
LR12LOP
RL12ROP
LL12LOP
RPGAO4
LOPLON
LPGAO3
RB2SPK
LB2SPK
RI2SPK
LI2SPK
RDSPK
LDSPK
RI4O4
LI4O3
OUT3MIX
OUT4MIX
LONMIX
RONMIX
LOPMIX
ROPMIX
SPKMIX
+
+
+
+
+
+
+
SPKATTN [1:0]
en
en
en
en
en
en
LON_ENA
ROP_ENA
RON_ENA
LOP_ENA
en
OUT3_ENA
OUT4_ENA
LOUT_ENA
SPKPGA_ENA
ROUT_ENA
| SPK_ENA
SPKPGA
SPKVOL
[6:0]
ROATTN
en
OUT4ATTN
en
en
en
en
en
en
Line
Line
LOATTN
en
Line
Line
en
HP
OUT3ATTN
HP
HP
HP
DCGAIN
LOUTVOL[6:0]
ROUTVOL[6:0]
[2:0]
SPK_ENA
PP, May 2008, Rev 3.1
en
SPK
ACGAIN
[2:0]
LON
LOP
OUT3
LOUT
SPKN
SPKP
ROUT
OUT4
ROP
RON
Pre-Production
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