wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 31

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

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Pre-Production
SIGNAL TIMING REQUIREMENTS
SYSTEM CLOCK TIMING
Figure 2 System Clock Timing Requirements
Test Conditions
DCVDD=1.8V, HBVDD=MBVDD=I2CVDD=I2S1VDD=I2S2VDD=AVDD=3.0V, SPKVDD=5V, GND=AGND=SPKGND=0V,
T
System Clock Timing Information
MCLK or MCLK2 cycle time
MCLK or MCLK2 duty cycle
A
=+25
MCLK
(or MCLK2)
o
C, Master Mode, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated.
PARAMETER
SYMBOL
T
MCLKY
t
MCLKL
t
MCLKY
t
MCLKH
= T
CONDITIONS
MCLKH
/T
MCLKL
60:40
MIN
40
TYP
PP, April 2009, Rev 3.0
40:60
MAX
WM8400
UNIT
ns
31