WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 31

• Manufacturer Part Number: WM8959
• Description: Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
• Manufacturer: Wolfson Microelectronics Ltd.

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Pre-Production
CONTROL INTERFACE TIMING – 4-WIRE MODE
Figure 10 Control Interface Timing – 4-Wire Serial Control Mode (Write Cycle)
Figure 11 Control Interface Timing – 4-Wire Serial Control Mode (Read Cycle)
Test Conditions
DCVDD=1.8V, DBVDD=AVDD=HPVDD=SPKVDD=3.3V, DGND=AGND=HPGND=SPKGND=0V, T
fs=48kHz, MCLK=256fs, 24-bit data, unless otherwise stated.
Program Register Input Information
SCLK rising edge to CSB falling edge
SCLK falling edge to CSB rising edge
SCLK pulse cycle time
SCLK pulse width low
SCLK pulse width high
SDIN to SCLK set-up time
SDIN to SCLK hold time
SDOUT propagation delay from SCLK rising edge
Pulse width of spikes that will be suppressed
SCLK falling edge to SDOUT transition
SCLK
SDIN
SDOUT
CSB
SCLK
CSB
PARAMETER
t
CSU
4-wire mode supports readback via SDOUT which is available as a GPIO pin function.
t
DSU
t
DHO
t
SCY
t
DL
SYMBOL
t
t
t
t
t
t
t
CSU
CHO
SCH
DSU
DHO
t
t
SCY
SCL
t
DL
DL
ps
LSB
t
CHO
LSB
MIN
200
40
40
80
80
40
10
0
TYP
A
=+25
PP, May 2008, Rev 3.1
MAX
o
10
40
5
C, Slave Mode,
WM8959
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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