Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

WM8734 Datasheet(PDF) 29 Page - Wolfson Microelectronics plc

Part # WM8734
Description  Stereo Audio CODEC
PDF  46 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8734 Datasheet(HTML) 29 Page - Wolfson Microelectronics plc

Back Button WM8734 Datasheet HTML 25Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 26Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 27Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 28Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 29Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 30Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 31Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 32Page - Wolfson Microelectronics plc WM8734 Datasheet HTML 33Page - Wolfson Microelectronics plc Next Button
Zoom Inzoom in Zoom Outzoom out
 29 / 46 page
background image
WM8734
Production Data
w
PD Rev 4.1 November 2006
29
SAMPLING
RATE
ADC
DAC
MCLK
FREQUENCY
SAMPLE
RATE
REGISTER SETTINGS
DIGITAL
FILTER
TYPE
kHz
kHz
MHz
BOSR
SR3
SR2
SR1
SR0
12.288
0 (256fs)
0
0
0
0
48
48
18.432
1 (384fs)
0
0
0
0
1
12.288
0 (256fs)
0
0
0
1
48
8
18.432
1 (384fs)
0
0
0
1
1
12.288
0 (256fs)
0
0
1
0
8
48
18.432
1 (384fs)
0
0
1
0
1
12.288
0 (256fs)
0
0
1
1
8
8
18.432
1 (384fs)
0
0
1
1
1
12.288
0 (256fs)
0
1
1
0
32
32
18.432
1 (384fs)
0
1
1
0
1
12.288
0 (128fs)
0
1
1
1
96
96
18.432
1 (192fs)
0
1
1
1
2
11.2896
0 (256fs)
1
0
0
0
44.1
44.1
16.9344
1 (384fs)
1
0
0
0
1
11.2896
0 (256fs)
1
0
0
1
44.1
8
(Note 1)
16.9344
1 (384fs)
1
0
0
1
1
11.2896
0 (256fs)
1
0
1
0
8
(Note 1)
44.1
16.9344
1 (384fs)
1
0
1
0
1
11.2896
0 (256fs)
1
0
1
1
8
(Note 1)
8
(Note 1)
16.9344
1 (384fs)
1
0
1
1
1
11.2896
0 (128fs)
1
1
1
1
88.2
88.2
16.9344
1 (192fs)
1
1
1
1
2
Table 10 Normal Mode Sample Rate Look-up Table
Notes:
1.
8k not exact, actual = 8.018kHz
2.
All other combinations of BOSR and SR[3:0] that are not in the truth table are invalid
The BOSR bit represents the base over-sampling rate. This is the rate that the WM8734 digital signal
processing is carried out at. In Normal mode, with BOSR = 0, the base over-sampling rate is at
256fs, with BOSR = 1, the base over-sampling rate is at 384fs. This can be used to determine the
actual audio data rate produced by the ADC and required by the DAC.
Example scenarios are:
1.
with a requirement that the ADC data rate is 8kHz and DAC data rate is 48kHz, then choosing
MCLK = 12.288MHz the device is programmed with BOSR = 0 (256fs), SR3 = 0, SR2 = 0, SR1
= 1, SR0 = 0.The ADC output data rate will then be exactly 8kHz (derived from 12.288MHz/256
x1/6) and the DAC expects data at exactly 48kHz (derived from 12.288MHz/256)
2.
with a requirement that ADC data rate is 8kHz and DAC data rate is 44.1kHz, then choosing
MCLK = 16.9344MHz the device is programmed with BOSR = 1 (384fs), SR3 = 1, SR2 = 0, SR1
= 0, SR0 = 1. The ADC will no longer output data at exactly 8.000kHz, instead it will be
8.018kHz (derived from 16.9344MHz/384 x 2/11), the DAC still is at exactly 44.1kHz (derived
from 16.9344MHz/384). A slight (sub 0.5%) pitch shift will therefore result in the 8kHz audio
data and (importantly) the user must ensure that the data across the digital interface is correctly
synchronised at the 8.018kHz rate.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com