WM8940GEFL/V Wolfson Microelectronics, WM8940GEFL/V Datasheet - Page 75

• Manufacturer Part Number: WM8940GEFL/V
• Description: Audio CODECs Mono CODEC with Speaker Driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8940GEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-24
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Production Data
24 (18h)
25 (19h)
26 (1Ah)
27 (1Bh)
REGISTER
ADDRESS
8
7:4
3:0
15:7
6:4
3:0
15:0
15:0
BIT
LIMEN
LIMDCY
LIMATK
LIMLVL
LIMBOOST
LABEL
0
0011
000
0000h
0010
000h
0000
0000h
DEFAULT
Enable the DAC digital limiter:
0=disabled
1=enabled
DAC Limiter Decay time (per 6dB gain change) for
44.1kHz sampling. Note that these will scale with
sample rate:
0000=750us
0001=1.5ms
0010=3ms
0011=6ms
0100=12ms
0101=24ms
0110=48ms
0111=96ms
1000=192ms
1001=384ms
1010=768ms
1011 to 1111=1.536s
DAC Limiter Attack time (per 6dB gain change) for
44.1kHz sampling. Note that these will scale with
sample rate.
0000=94us
0001=188s
0010=375us
0011=750us
0100=1.5ms
0101=3ms
0110=6ms
0111=12ms
1000=24ms
1001=48ms
1010=96ms
1011 to 1111=192ms
Reserved
DAC Limiter Programmable signal threshold level
(determines level at which the limiter starts to operate)
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
DAC Limiter volume boost (can be used as a stand
alone volume boost when LIMEN=0):
0000=0dB
0001=+1dB
0010=+2dB
… (1dB steps)
1011=+11dB
1100=+12dB
1101 to 1111=reserved
Reserved
Reserved
DESCRIPTION
PD, Rev 4.2, April 2008
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
Output Signal
Path
REFER TO
WM8940
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