wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 34

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
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AUDIO INTERFACE TIMING – 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
WM8400 ADCDAT tri-stating at the start and end of the data transmission is described in Figure 5 and the table below.
Figure 5 Digital Audio Data Timing - TDM Mode
Test Conditions
HBVDD=MBVDD=I2CVDD=I2S1VDD=I2S2VDD=AVDD=3.0V, SPKVDD=5V, GND=AGND=SPKGND=0V,
T
Audio Data Timing Information
ADCDAT setup time from BCLK falling edge
ADCDAT release time from BCLK falling edge
A
=+25
o
C, Master Mode, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated.
PARAMETER
DCVDD = 3.6V
DCVDD = 1.8V
DCVDD = 3.6V
DCVDD = 1.8V
CONDITIONS
MIN
TYP
15
15
2
2
PP, April 2009, Rev 3.0
MAX
Pre-Production
UNIT
ns
ns
ns
ns
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