wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 91
wm9714l
Manufacturer Part Number
wm9714l
Description
Ac?97 Audio Codec
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM9714L.pdf
(119 pages)
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20h
Pre-Production
Register 20h controls the bass and treble response of the left and right audio DAC (but not AUXDAC).
w
REGISTER
ADDRESS
15
12
11:8
6
4
3:0
BIT
BB
BC
BASS
DAT
TC
TRBL
LABEL
0 (linear)
0 (low)
1111 (off0)
0 (0dB)
0 (high)
1111 (off)
DEFAULT
Bass Mode Control
0 = Linear bass control
1 = Adaptive bass boost
Bass Cut-off Frequency Control
0 = Low (130Hz at 48kHz sampling)
1 = High (200Hz at 48kHz sampling)
Bass Intensity Control
BB=0
0000 = +9dB
0001 = +9dB
… (1.5dB steps)
0111 = 0dB
… (1.5dB steps)
1011-1110 = -6dB
1111 = Bypass (off)
Pre-DAC Attenuation Control
0 = 0dB
1 = -6dB
Treble Cut-off Frequency Control
0 = High (8kHz at 48kHz sampling)
1 = Low (4kHz at 48kHz sampling)
Treble Intensity Control
0000 = +9dB
0001 = +9dB
… (1.5dB steps)
0111 = 0dB
… (1.5dB steps)
1011-1110 = -6dB
1111 = Bypass (off)
DESCRIPTION
BB=1
0000 = 15dB
… (1dB steps)
1110 = 1dB
1111 = Bypass (off)
PP, Rev 3.2, October 2008
WM9714L
Audio DACs,
Tone Control /
Bass Boost
REFER TO
91
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