wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 33

• 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
AUDIO INTERFACE TIMING – SLAVE MODE
Figure 4 Digital Audio Data Timing – Slave Mode
Note:
BCLK (or BCLK2) period should always be greater than or equal to MCLK (or MCLK2) period.
Test Conditions
DCVDD=1.8V, HBVDD=MBVDD=I2CVDD=I2S1VDD=I2S2VDD=AVDD=3.0V, SPKVDD=5V, GND=AGND=SPKGND=0V,
T
Audio Data Timing Information
BCLK (or BCLK2) cycle time
BCLK (or BCLK2) pulse width high
BCLK (or BCLK2) pulse width low
ADCLRC/ DACLRC (or DACLRC2) set-up time to BCLK
(or BCLK2) rising edge
ADCLRC/ DACLRC (or DACLRC2) hold time from BCLK
(or BCLK2) rising edge
DACDAT (or DACDAT2) hold time from BCLK (or BCLK2)
rising edge
ADCDAT propagation delay from BCLK falling edge
DACDAT (or DACDAT2) set-up time to BCLK (or BCLK2)
rising edge
ADCLRC to ADCLRCB delay
A
=+25
o
C, Slave Mode, fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated.
PARAMETER
SYMBOL
t
t
DLRCB
t
t
t
LRSU
t
BCH
t
t
t
BCY
BCL
LRH
DH
DD
DS
MIN
80
32
32
10
10
10
TYP
PP, April 2009, Rev 3.0
MAX
10
40
10
WM8400
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
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