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WM8978GEFL/V Datasheet(PDF) 61 Page - Wolfson Microelectronics plc

Part # WM8978GEFL/V
Description  STEREO CODEC WITH SPEAKER DRIVER
PDF  78 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8978GEFL/V Datasheet(HTML) 61 Page - Wolfson Microelectronics plc

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WM8978
w
PP Rev 1.7 January 2005
61
MCLK
(MHz)
(F1)
DESIRED
OUTPUT
(MHz)
F2
(MHz)
PRESCALE
DIVIDE
POSTSCALE
DIVIDE
R
N
(Hex)
K
(Hex)
12
11.29
90.3168
1
2
7.5264
7
86C227
12
12.288
98.304
1
2
8.192
8
3126E9
13
11.29
90.3168
1
2
6.947446
6
F28BD5
13
12.288
98.304
1
2
7.561846
7
8FD526
14.4
11.29
90.3168
1
2
6.272
6
45A1CB
14.4
12.288
98.304
1
2
6.826667
6
D3A06D
19.2
11.29
90.3168
2
2
9.408
9
6872B0
19.2
12.288
98.304
2
2
10.24
A
3D70A4
19.68
11.29
90.3168
2
2
9.178537
9
2DB493
19.68
12.288
98.304
2
2
9.990243
9
FD80A0
19.8
11.29
90.3168
2
2
9.122909
9
1F76F8
19.8
12.288
98.304
2
2
9.929697
9
EE009F
24
11.29
90.3168
2
2
7.5264
7
86C227
24
12.288
98.304
2
2
8.192
8
3126E9
26
11.29
90.3168
2
2
6.947446
6
F28BD5
26
12.288
98.304
2
2
7.561846
7
8FD526
27
11.29
90.3168
2
2
6.690133
6
BOAC94
27
12.288
98.304
2
2
7.281778
7
482297
Table 51 PLL Frequency Examples
GENERAL PURPOSE INPUT/OUTPUT
The WM8978 has three dual purpose input/output pins.
•
CSB/GPIO1: CSB / GPIO pin
•
L2/GPIO2: Left channel line input / headphone detection input
•
R2/GPIO3: Right channel line input / headphone detection input
The GPIO2 and GPIO3 functions are provided for use as jack detection inputs.
The GPIO1 functions are provided for use as a jack detection input or general purpose output.
The default configuration for the CSB/GPIO1 is to be an input.
When setup as an input, the CSB/GPIO1 pin can either be used as CSB or for jack detection,
depending on how the MODE pin is set.
Table 48 illustrates the functionality of the GPIO1 pin when used as a general purpose output.



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