WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 18

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8978
CONTROL INTERFACE TIMING – 2-WIRE MODE
w
Test Conditions
DCVDD=1.8V,
MCLK = 256fs, 24-bit data, unless otherwise stated.
PARAMETER
Program Register Input Information
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
DBVDD=AVDD=SPKVDD=3.3V,
Figure 5 Control Interface Timing – 2-Wire Serial Control Mode
SCLK
SDIN
t
3
DGND=AGND=SPKGND=0V,
t
1
t
6
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
ps
9
1
2
3
4
5
6
7
8
9
t
2
t
7
t
5
MIN
600
600
600
100
600
1.3
T
0
0
A
=+25
t
4
o
C,
t
3
TYP
PTD Rev 2.6 November 2005
Slave
Preliminary Technical Data
Mode,
MAX
526
300
300
900
5
fs=48kHz,
t
8
UNIT
kHz
us
ns
ns
ns
ns
ns
ns
ns
ns
ns
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