wm8982gefl-v Wolfson Microelectronics plc, wm8982gefl-v Datasheet - Page 69

• Manufacturer Part Number: wm8982gefl-v
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
Table 56 PLL Frequency Examples
LOOPBACK
COMPANDING
w
MCLK
(MHz)
19.68
19.68
14.4
14.4
19.2
19.2
19.8
19.8
(f1)
12
12
13
13
24
24
26
26
27
27
DESIRED
(SYSCLK)
OUTPUT
12.288
12.288
12.288
12.288
12.288
12.288
12.288
12.288
12.288
11.29
11.29
11.29
11.29
11.29
11.29
11.29
11.29
11.29
(MHz)
90.3168
90.3168
90.3168
90.3168
90.3168
90.3168
90.3168
90.3168
90.3168
98.304
98.304
98.304
98.304
98.304
98.304
98.304
98.304
98.304
(MHz)
f2
Setting the LOOPBACK register bit enables digital loopback. When this bit is set the output data
from the ADC audio interface is fed directly into the DAC data input.
The WM8982 supports A-law and µ-law companding and linear mode on both transmit (ADC) and
receive (DAC) sides. Companding can be enabled on the DAC or ADC audio interfaces by writing
the appropriate value to the DAC_COMP or ADC_COMP register bits respectively.
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
1
2
2
2
2
2 6.947446
2 7.561846
2
2 6.826667
2
2
2 9.178537
2 9.990243
2 9.122909
2 9.929697
2
2
2 6.947446
2 7.561846
2 6.690133
2
7.5264
7.5264
7.281778
8.192
6.272
9.408
10.24
8.192
R
7h
Ah
7h
8h
6h
7h
6h
6h
9h
9h
9h
9h
9h
7h
8h
6h
7h
6h
N
45A1CAh
D3A06Eh
B0AC93h
F28BD4h
3D70A3h
2DB492h
FD809Fh
EE009Eh
F28BD4h
86C226h
8FD525h
6872AFh
86C226h
8FD525h
3126E8h
1F76F7h
3126E8h
482296h
K
REGISTER
R36[3:0]
XXAh
XX7h
XX8h
XX6h
XX7h
XX6h
XX6h
XX9h
XX9h
XX9h
XX9h
XX9h
XX7h
XX8h
XX6h
XX7h
XX6h
XX7h
N
00Ch
03Ch
01Ah
00Bh
00Ch
03Ch
02Ch
021h
023h
011h
034h
00Fh
03Fh
007h
03Bh
021h
023h
012h
R37
PP, Rev 3.2, September 2008
K REGISTERS
1EAh
0DAh
1BBh
1EAh
0D0h
1D0h
0B8h
0C0h
161h
093h
145h
039h
100h
161h
093h
145h
056h
011h
R38
WM8982
1CAh
1D4h
0AFh
1D4h
026h
0E8h
06Eh
0A3h
0F7h
09Eh
026h
0E8h
093h
125h
092h
125h
096h
09Fh
R39
69