WM8983GEFL/V Wolfson Microelectronics, WM8983GEFL/V Datasheet - Page 61

• Manufacturer Part Number: WM8983GEFL/V
• Description: Audio CODECs Mbl Multimedia CODEC w/ 1W Speaker Driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8983GEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
w
5-BAND GRAPHIC EQUALISER
Table 32 EQ and 3D Enhancement DAC or ADC Path Select
Table 33 EQ Band 1 Control
Table 34 EQ Band 2 Control
Table 35 EQ Band 3 Control
A 5-band graphic equaliser is provided, which can be applied to the ADC or DAC path, together with
3D enhancement, under control of the EQ3DMODE register bit.
Note: The ADCs and DACs must be disabled before changing the EQ3DMODE bit.
The equaliser consists of low and high frequency shelving filters (Band 1 and 5) and three peak filters
for the centre bands. Each has adjustable cut-off or centre frequency, and selectable boost (+/-
12dB in 1dB steps). The peak filters have selectable bandwidth.
R18
EQ Control 1
R18
EQ Band 1
Control
R19
EQ Band 2
Control
R20
EQ Band 3
Control
REGISTER
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
ADDRESS
8
4:0
6:5
4:0
6:5
8
4:0
6:5
8
BIT
BIT
BIT
BIT
EQ3DMODE
EQ1G
EQ1C
EQ2G
EQ2C
EQ2BW
EQ3G
EQ3C
EQ3BW
LABEL
LABEL
LABEL
LABEL
1
01100
(0dB)
01
01100
(0dB)
01
0
01100
(0dB)
01
0
DEFAULT
DEFAULT
DEFAULT
DEFAULT
0 = Equaliser and 3D Enhancement
applied to ADC path
1 = Equaliser and 3D Enhancement
applied to DAC path
Band 1 Gain Control. See Table 38 for
details.
Band 1 Cut-off Frequency:
00 = 80Hz
01 = 105Hz
10 = 135Hz
11 = 175Hz
Band 2 Gain Control. See Table 38 for
details.
Band 2 Centre Frequency:
00 = 230Hz
01 = 300Hz
10 = 385Hz
11 = 500Hz
Band 2 Bandwidth Control
0 = narrow bandwidth
1 = wide bandwidth
Band 3 Gain Control. See Table 38 for
details.
Band 3 Centre Frequency:
00 = 650Hz
01 = 850Hz
10 = 1.1kHz
11 = 1.4kHz
Band 3 Bandwidth Control
0 = narrow bandwidth
1 = wide bandwidth
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.3, May 2010
WM8983
61