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WM8960CGEFL/V 데이터시트(PDF) 40 Page - Cirrus Logic

부품명 WM8960CGEFL/V
상세설명  Speaker and Headphone Drivers for Portable Audio Applications
PDF  94 Pages
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제조업체  CIRRUS [Cirrus Logic]
홈페이지  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8960CGEFL/V 데이터시트(HTML) 40 Page - Cirrus Logic

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WM8960
40
Rev 4.4
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R39 (27h)
Mono Out Mix
(2)
7
R2MO
0
Right Output Mixer to Mono Output
Mixer Control
0 = Right channel mix disabled
1 = Right channel mix enabled
R42 (2Ah)
Mono Out
Volume
6
MOUTVOL
1
Mono Output Mixer Volume Control
0 = 0dB
1 = -6dB
Table 23 Output Mixer Enable Control
When left and right inputs to the mono mixer are both disabled, the mono mixer will output VMID.
ANALOGUE OUTPUTS
HP_L AND HP_R OUTPUTS
The HP_L and HP_R pins can drive a 16
 or 32 headphone or a line output (see “Headphone
Output
”). The signal volume on HP_L and HP_R can be independently adjusted under software
control by writing to LOUT1VOL and ROUT1VOL, respectively. Note that gains over 0dB may cause
clipping if the signal is large. Any gain setting below 0101111 (minimum) mutes the output driver. The
corresponding output pin remains at the same DC level (the reference voltage on the VREF pin), so
that no click noise is produced when muting or un-muting.
A zero cross detect on the analogue output may also be enabled when changing the gain setting to
minimize audible clicks and zipper noise as the gain updates. If zero cross is enabled a timeout is also
available to update the gain if a zero cross does not occur. This function may be enabled by setting
TOEN in register R23 (17h). The timeout period is set by TOCLKSEL. Note: SYSCLK must be
enabled to use this function.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R2 (02h)
LOUT1
Volume
8
OUT1VU
0
Headphone Volume Update
0 = Store LOUT1VOL in intermediate
latch (no gain change)
1 = Update left and right channel gains
(left = LOUT1VOL, right = intermediate
latch)
7
LO1ZC
0
Left zero cross enable
0 = Change gain immediately
1 = Change gain on zero cross only
6:0
LOUT1VOL
[6:0]
0000000
(MUTE)
LOUT1 Volume
1111111 = +6dB
… 1dB steps down to
0110000 = -73dB
0101111 to 0000000 = Analogue
MUTE
R3 (03h)
ROUT1
Volume
8
OUT1VU
0
Headphone Volume Update
0 = Store ROUT1VOL in intermediate
latch (no gain change)
1 = Update left and right channel gains
(left = intermediate latch, right =
ROUT1VOL)
7
RO1ZC
0
Right zero cross enable
0 = Change gain immediately
1 = Change gain on zero cross only
6:0
ROUT1VOL
[6:0]
0000000
(MUTE)
ROUT1 Volume
Similar to LOUT1VOL
Table 24 LOUT1/ROUT1 Volume Control



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