Si3050 + Si3011/18/19
Table 9. Switching Characteristics—GCI Highway Serial Interface
(VD = 3.0 to 3.6 V, TA = 0 to 70 °C, CL = 20 pF)
Parameter1
Symbol
Test
Conditions
Min
Typ
Max Units
Cycle Time PCLK (Single Clocking Mode)
tp
—
488
—
ns
Cycle Time PCLK (Double Clocking Mode)
tp
—
244
—
ns
Valid PCLK Inputs
—
2.048
—
MHz
—
4.096
—
MHz
FSYNC Period2
tfp
—
125
—
µs
PCLK Duty Cycle
tdty
40
50
60
%
PCLK Jitter Tolerance
tjitter
—
—
2
ns
FSYNC Jitter Tolerance
tjitter
—
—
±120
ns
Rise Time, PCLK
tr
—
—
25
ns
Fall Time, PCLK
tf
—
—
25
ns
Delay Time, PCLK Rise to DTX Active
td1
—
—
20
ns
Delay Time, PCLK Rise to DTX Transition
td2
Delay Time, PCLK Rise to DTX Tri-State3
td3
—
—
20
ns
—
—
20
ns
Setup Time, FSYNC Rise to PCLK Fall
tsu1
25
—
—
ns
Hold Time, PCLK Fall to FSYNC Fall
th1
20
—
—
ns
Setup Time, DRX Transition to PCLK Fall
tsu2
25
—
—
ns
Hold Time, PCLK Falling to DRX Transition
th2
20
—
—
ns
Notes:
1. All timing is referenced to the 50% level of the waveform. Input test levels are VIH = VO – 0.4 V, VIL = 0.4 V, rise and fall
times are referenced to the 20% and 80% levels of the waveform.
2. FSYNC must be 8 kHz under all operating conditions.
3. Specification applies to PCLK fall to DTX tri-state when that mode is selected.
tr
tf
tp
PCLK
th1
t su1
tfp
FSYNC
DRX
t su2
t h2
t d1
t d2
t d3
DTX
Figure 5. GCI Highway Interface Timing Diagram (1x PCLK Mode)
Rev. 1.5
13