wm8940gefl-v Wolfson Microelectronics plc, wm8940gefl-v Datasheet - Page 14

• Manufacturer Part Number: wm8940gefl-v
• Description: Mono Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

WM8940
w
AUDIO INTERFACE TIMING – SLAVE MODE
Note:
BCLK period should always be greater than or equal to MCLK period.
Test Conditions
DCVDD=1.8V, DBVDD=AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
FRAME 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=AVDD=SPKVDD=3.3V, DGND=AGND=SPKGND=0V, T
24-bit data, unless otherwise stated.
PARAMETER
Audio Data Input Timing Information
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
FRAME set-up time to BCLK rising edge
FRAME 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
Figure 3 Digital Audio Data Timing – Slave Mode
SYMBOL
t
t
SYMBOL
t
t
LRSU
t
BCH
t
t
t
BCY
BCL
LRH
DH
DS
DD
t
t
t
t
DDA
DST
DHT
DL
A
A
=+25
=+25
81.38
32.55
32.55
10
10
10
10
10
10
MIN
MIN
o
o
C, Slave Mode, fs=48kHz, MCLK= 256fs,
C, Slave Mode, fs=48kHz, MCLK=256fs,
TYP
TYP
PD, Rev 4.2, April 2008
MAX
MAX
10
15
15
Production Data
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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