wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 20
wm8918
Manufacturer Part Number
wm8918
Description
Ultra Low Power Dac For Portable Audio Applications
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8918.pdf
(175 pages)
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WM8918
Note: BCLK period must always be greater than or equal to MCLK period.
w
Test Conditions
DCVDD = 1.0V, AVDD = DBVDD = CPVDD = 1.8V, DGND=AGND=CPGND =0V, T
MCLK=256fs, 24-bit data, unless otherwise stated.
Audio Interface Timing - Slave Mode
BCLK cycle time
BCLK pulse width high
BCLK pulse width low
LRCLK set-up time to BCLK rising edge
LRCLK hold time from BCLK rising edge
AIFRXDAT hold time from BCLK rising edge
AIFTXDAT propagation delay from BCLK falling edge
AIFRXDAT set-up time to BCLK rising edge
PARAMETER
SLAVE MODE
Figure 3 Audio Interface Timing – Slave Mode
LRCLK (input)
BCLK (input)
AIFRXDAT
AIFTXDAT
(output)
(input)
t
DD
t
BCH
t
BCY
t
t
BCL
SYMBOL
DS
t
t
t
t
t
LRSU
t
t
BCY
BCH
t
BCL
LRH
DH
DD
DS
t
LRH
t
DH
t
LRSU
A
MIN
= +25
50
20
20
20
10
10
20
o
C, Slave Mode, fs=48kHz,
TYP
PD, Rev 4.0, September 2010
MAX
20
Production Data
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
20
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