WM8524-6228-DT16-EV1 Wolfson Microelectronics, WM8524-6228-DT16-EV1 Datasheet - Page 14

• Manufacturer Part Number: WM8524-6228-DT16-EV1
• Description: KIT, EVAL, FOR WM8524
• Manufacturer: Wolfson Microelectronics
• Type: DA Converterr

Specifications of WM8524-6228-DT16-EV1

• Mcu Supported Families: WM8524
• Svhc: No SVHC (15-Dec-2010)
• Silicon Manufacturer: Wolfson Microelectronics
• Kit Application Type: Data Acquisition
• Application Sub Type: DAC

WM8524
DIGITAL AUDIO DATA SAMPLING RATES
Table 3 MCLK Frequencies and Audio Sample Rates
w
Sampling Rate
176.4kHz
44.1kHz
88.2kHz
192kHz
LRCLK
32kHz
48kHz
96kHz
8kHz
Unavailable
Unavailable
Unavailable
Unavailable
11.2896
22.5792
12.288
24.576
128fs
Figure 8 I
The external master clock is applied directly to the MCLK input pin. In a system where there are a
number of possible sources for the reference clock, it is recommended that the clock source with the
lowest jitter be used for the master clock to optimise the performance of the WM8524.
The WM8524 has a detection circuit that automatically determines the relationship between the
master clock frequency (MCLK) and the sampling rate (LRCLK), to within ±32 system clock periods.
The MCLK must be synchronised with the LRCLK, although the device is tolerant of phase variations
or jitter on the MCLK.
If during sample rate change the ratio between MCLK and LRCLK varies more than once within 1026
LRCLK periods, then it is recommended that the device be taken into the standby state or the off
state before the sample rate change and held in standby until the sample rate change is complete.
This will ensure correct operation of the detection circuit on the return to the enabled state. For
details on the standby state, please refer to the Power up and down control section of the datasheet
on page 16.
The DAC supports MCLK to LRCLK ratios of 128fs to 1152fs and sampling rates of 8kHz to 192kHz.
Table 3 shows typical master clock frequencies and sampling rates supported by the WM8524 DAC.
Unavailable
Unavailable
Unavailable
Unavailable
16.9344
33.8688
18.432
36.864
192fs
2
S Justified Audio Interface (assuming n-bit word length)
Unavailable
Unavailable
11.2896
22.5792
MASTER CLOCK FREQUENCY (MHz)
12.288
24.576
256fs
2.048
8.192
Unavailable
Unavailable
16.9344
33.8688
18.432
36.864
12.288
384fs
3.072
Unavailable
Unavailable
Unavailable
Unavailable
22.5792
16.384
24.576
512fs
4.096
Unavailable
Unavailable
Unavailable
Unavailable
33.8688
24.576
36.864
768fs
6.144
PD, Rev 4.0, June 2010
Production Data
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
1152fs
36.864
9.216
14