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WM8904ECS/R Datasheet(PDF) 28 Page - Wolfson Microelectronics plc

Part # WM8904ECS/R
Description  Ultra Low Power CODEC for Portable Audio Applications
PDF  188 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8904ECS/R Datasheet(HTML) 28 Page - Wolfson Microelectronics plc

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WM8904
Pre-Production
w
PP, Rev 3.3, September 2012
28
TDM MODE
In TDM mode, it is important that two ADC devices do not attempt to drive the ADCDAT pin
simultaneously. The timing of the WM8904 ADCDAT tri-stating at the start and end of the data
transmission is described below.
Figure 4 Audio Interface Timing - TDM Mode
Test Conditions
AVDD = CPVDD = 1.8V , DGND=AGND=CPGND= =0V, TA = +25
oC, Master Mode, fs=48kHz, MCLK=256fs, 24-bit data, unless
otherwise stated.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Audio Data Timing Information
ADCDAT setup time from BCLK falling edge
DCVDD =2.0V
DBVDD =
3.6V
5
ns
DCVDD =
1.08V DBVDD
= 1.62V
15
ns
ADCDAT release time from BCLK falling edge
DCVDD =
2.0V DBVDD
= 3.6V
5
ns
DCVDD =
1.08V DBVDD
= 1.62V
15
ns



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