wm8976gefl-v Wolfson Microelectronics plc, wm8976gefl-v Datasheet - Page 14

• Manufacturer Part Number: wm8976gefl-v
• Description: Stereo Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

WM8976
SIGNAL TIMING REQUIREMENTS
SYSTEM CLOCK TIMING
Figure 2 System Clock Timing Requirements
Note 1:
PLL pre-scaling and PLL N and K values should be set appropriately so that SYSCLK is no greater than 12.288MHz.
AUDIO INTERFACE TIMING – MASTER MODE
w
Test Conditions
DCVDD=1.8V, DBVDD=AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
PARAMETER
System Clock Timing Information
MCLK cycle time
MCLK duty cycle
MCLK
Figure 3 Digital Audio Data Timing – Master Mode (see Control Interface)
SYMBOL
T
T
MCLKDS
MCLKY
t
MCLKL
t
MCLKY
MCLK=SYSCLK (=256fs)
MCLK input to PLL
t
MCLKH
CONDITIONS
Note 1
A
= +25
81.38
60:40
MIN
20
o
C
TYP
PD Rev 4.4 July 2009
40:60
MAX
Production Data
UNIT
ns
ns
14