WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 18

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8985
AUDIO INTERFACE TIMING – SLAVE MODE
Note:
BCLK period should always be greater than or equal to MCLK period.
w
Test Conditions
DCVDD=1.8V,
MCLK=256fs, 24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
LRC propagation delay from BCLK falling edge
ADCDAT propagation delay from BCLK falling edge
DACDAT setup time to BCLK rising edge
DACDAT hold time from BCLK rising edge
Test Conditions
DCVDD=1.8V, DBVDD=AVDD1=AVDD2=3.3V, DGND=AGND1=AGND2=0V, T
MCLK= 256fs, 24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
LRC set-up time to BCLK rising edge
LRC hold time from BCLK rising edge
DACDAT hold time from BCLK rising edge
DACDAT set-up time to BCLK rising edge
ADCDAT propagation delay from BCLK falling edge
DBVDD=AVDD1=AVDD2=3.3V,
Figure 4 Digital Audio Data Timing – Slave Mode
DGND=AGND1=AGND2=0V,
SYMBOL
SYMBOL
t
t
t
t
LRSU
t
BCH
t
t
BCY
BCL
LRH
t
DH
DD
Ds
t
t
t
t
DDA
DST
DHT
DL
A
=+25
T
MIN
MIN
10
10
50
20
20
10
10
10
10
A
o
=+25
C, Slave Mode, fs=48kHz,
o
C,
TYP
TYP
Master
PP, Rev 3.5, March 2007
Mode,
MAX
MAX
10
10
10
Pre-Production
fs=48kHz,
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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