WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 48
WM8978
Manufacturer Part Number
WM8978
Description
The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8978.pdf
(108 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
WM8978CGEFL/RV
Manufacturer:
WOLFSON
Quantity:
10 000
Part Number:
WM8978CGEFL/RV
Manufacturer:
WOLFSON
Quantity:
20 000
Company:
Part Number:
WM8978G
Manufacturer:
SANYO
Quantity:
87 018
Part Number:
WM8978G
Manufacturer:
WM
Quantity:
20 000
Part Number:
WM8978GEFL
Manufacturer:
WOLFSON
Quantity:
20 000
Company:
Part Number:
WM8978GEFL/RV
Manufacturer:
WOLFSON
Quantity:
9 870
WM8978
w
Table 29 EQ Band 3 Control
Table 30 EQ Band 4 Control
Table 31 EQ Band 5 Control
Table 32 Gain Register Table
R20
EQ Band 3
Control
R21
EQ Band 4
Control
R22
EQ Band 5
Gain Control
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
GAIN REGISTER
11001 to 11111
…. (1dB steps)
00000
00001
00010
01100
01101
11000
4:0
6:5
8
4:0
6:5
8
4:0
6:5
BIT
BIT
BIT
EQ3G
EQ3C
EQ3BW
EQ4G
EQ4C
EQ4BW
EQ5G
EQ5C
LABEL
LABEL
LABEL
Reserved
01100
(0dB)
01
0
01100
(0dB)
01
0
01100
(0dB)
01
+12dB
+11dB
+10dB
-12dB
GAIN
-1dB
DEFAULT
DEFAULT
DEFAULT
0dB
Band 3 Gain Control. See Table 32 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
Band 4 Gain Control. See Table 32 for
details
Band 4 Centre Frequency:
00=1.8kHz
01=2.4kHz
10=3.2kHz
11=4.1kHz
Band 4 Bandwidth Control
0=narrow bandwidth
1=wide bandwidth
Band 5 Gain Control. See Table 32 for
details.
Band 5 Cut-off Frequency:
00=5.3kHz
01=6.9kHz
10=9kHz
11=11.7kHz
PTD Rev 2.6 November 2005
DESCRIPTION
DESCRIPTION
DESCRIPTION
Preliminary Technical Data
48