Si3035
Table 8. Switching Characteristics—Serial Interface (DCE = 0)
(VA = Charge Pump, VD = 3.0 to 5.25 V, TA = 0 to 70°C for K-Grade, CL = 20 pF)
Parameter
Symbol
tc
Min
354
—
Typ
Max
—
Unit
ns
%
Cycle time, SCLK
1/256 Fs
SCLK duty cycle
tdty
td1
50
—
—
—
—
—
—
—
—
Delay time, SCLK ↑ to FSYNC ↓
Delay time, SCLK ↑ to SDO valid
Delay time, SCLK ↑ to FSYNC ↑
Setup time, SDI before SCLK ↓
Hold time, SDI after SCLK ↓
Setup time, FC ↑ before SCLK ↑
Hold time, FC ↑ after SCLK ↑
—
10
20
10
—
ns
ns
ns
ns
ns
ns
ns
td2
—
td3
—
tsu
25
20
40
40
th
—
tsfc
thfc
—
—
Note: All timing is referenced to the 50% level of the waveform. Input test levels are VIH = VD – 0.4 V, VIL = 0.4 V
tc
VOH
VOL
SCLK
td1
td3
FSYNC
(mode 0)
td3
FSYNC
(mode 1)
td2
16 Bit
SDO
D15
D15
D14
D14
D1
D1
D0
th
tsu
16 Bit
SDI
D0
tsfc
thfc
FC
Figure 3. Serial Interface Timing Diagram
8
Rev. 1.2
ETC [ ETC ]
