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WM9713L Datasheet(PDF) 49 Page - Wolfson Microelectronics plc

Part # WM9713L
Description  AC 97 Audio Touchpanel CODEC
PDF  108 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9713L Datasheet(HTML) 49 Page - Wolfson Microelectronics plc

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Pre-Production
WM9713L
w
PP Rev 3.0 June 2006
49
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
15
MUL
1 (Mute)
Mute HPL
1: Mute (OFF)
0: No Mute (ON)
14
ZCL
0
Left zero cross enable
0: Change gain immediately
1: Change gain only on zero crossings,
or after time-out
13:8
HPLVOL
000000
(0dB)
HPL Volume
000000: 0dB (maximum)
000001: -1.5dB
… (1.5dB steps)
011111: -46.5dB
1xxxxx: -46.5dB
7
MUR
1 (Mute)
Mute HPR
1: Mute (OFF)
0: No Mute (ON)
6
ZCR
0
Right zero cross enable
0: Change gain immediately
1: Change gain only on zero crossings,
or after time-out
04h
Headphone
Volume
5:0
HPRVOL
000000
(0dB)
HPR Volume
Similar to HPLVOL
Table 33 HPL / HPR PGA Control
MONO OUTPUT
The MONO output (pin 31) is designed to drive a 16
Ω headphone load and can also be used as a
line output. The available input sources are MONOMIX, INV1 and Vmid (see Table 34)
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
1Ch
Output PGA
Mux Select
15:14
MONO
00 (Vmid)
MONO input source select
00: Vmid
01: no input (tri-stated if MONO=1 in
register 3Eh)
10: MONOMIX
11: INV1
Table 34 MONO PGA Input Source
The signal volume on MONO can be independently adjusted under software control by writing to
register 08h.
When not in use MONO can be powered down using the Powerdown register bit MONO (register
3Eh, bit 13). To minimise pops and clicks when the PGA is powered down / up it is recommended
that the Vmid input is selected during the power down / up cycle. This ensures the same DC level is
maintained on the output pin throughout.



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