wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 19

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
Figure 4 Audio Interface Timing – TDM Mode
CONTROL INTERFACE
Figure 5 Control Interface Timing
w
Audio Interface Timing – TDM Mode
PARAMETER
ADCDAT setup time from BCLK falling edge
ADCDAT release time from BCLK falling edge
Control Interface Timing
PARAMETER
SCLK Frequency
SCLK Low Pulse-Width
SCLK High Pulse-Width
Hold Time (Start Condition)
Setup Time (Start Condition)
Data Setup Time
SDIN, SCLK Rise Time
SDIN, SCLK Fall Time
Setup Time (Stop Condition)
Data Hold Time
Pulse width of spikes that will be suppressed
SCLK
SDIN
t
3
t
TDM MODE
In TDM mode, it is important that two devices to not attempt to drive the ADCDAT pin
simultaneously. The timing of the WM8903 ADCDAT pin tri-stating at the start and end of the data
transmission is described below.
1
t
6
t
9
t
2
t
7
t
5
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
ps
1
2
3
4
5
6
7
8
9
t
4
t
3
MIN
MIN
600
600
600
100
600
1.3
0
TYP
TYP
25
4
t
8
PP, Rev 3.1, August 2009
MAX
MAX
526
300
300
900
5
WM8903
UNIT
UNIT
kHz
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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