WM8711 Wolfson Microelectronics Ltd., WM8711 Datasheet - Page 23

• Manufacturer Part Number: WM8711
• Description: Internet Audio DAC With Integrated Headphone Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8711
WOLFSON MICROELECTRONICS LTD
The exact sample rates achieved are defined by the relationships in Table 12 below.
Table 12 Normal Mode Actual Sample Rates
128/192FS NORMAL MODE
The Normal Mode sample rates are designed for standard 256Fs and 384Fs MCLK rates. However
the WM8711 is also capable of being clocked from a 128/192Fs MCLK for application over limited
sampling rates as shown in the table below.
Table 13 128/192Fs Normal Mode Sample Rate Look-up Table
512/768FS NORMAL MODE
512 Fs and 768 Fs MCLK rates can be accommodated by using the CLKIDIV2 bit. The core clock to
the DSP will be divided by 2 so an external 512/768 MCLK will become 256/384 Fs internally and the
device otherwise operates as in Table 10 but with MCLK at twice the specified rate.
SAMPLING
ADC
KHz
44.1
TARGET
48
SAMPLING
RATE
KHz
44.1
88.2
32
48
96
RATE
8
DAC
KHz
44.1
48
12.288MHz/256 x 1/6
12.288MHz/256 x 2/3
12.288MHz/256 x 2
MCLK=12.288
not available
not available
12.288MHz/256
FREQUENCY
KHz
5.6448
8.4672
32
48
96
MCLK
6.144
9.216
8
MHz
BOSR=0
(256FS)
BOSR
11.2896MHz/256 x 2/11
MCLK=11.2896
11.2896MHz/384 x 2
0
1
0
1
not available
11.2896MHz/256
not available
not available
8.018
KHz
44.1
88.2
ACTUAL SAMPLING RATE
SR3
REGISTER SETTINGS
0
0
1
1
SAMPLE
RATE
SR2
1
1
1
1
18.432MHz/384 x 1/6
18.432MHz/384x 2/3
18.432MHz/384 x 2
MCLK=18.432
not available
not available
18.432MHz/384
KHz
SR1
32
48
96
8
1
1
1
1
PP Rev 1.2 November 2000
BOSR=1
SR0
(384FS)
1
1
1
1
Product Preview
16.9344MHz/384 x 2/11
16.9344MHz /384 x 2
MCLK=16.9344
16.9344MHz /384
not available
not available
not available
DIGITAL
FILTER
TYPE
8.018
KHz
44.1
88.2
2
2
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