
CDCR83
DIRECT RAMBUS CLOCK GENERATOR
SCAS632B APRIL 2001 REVISED OCTOBER 2005
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
CLK
CLKB
tpd(1)
tc(5)
Duty cycle = (tpd(1)/tc(5))
Figure 4. Output Duty Cycle
CLK
CLKB
tpd(2)
tc(6)
Duty cycle error = tpd(2) tpd(3)
tpd(3)
tc(7)
Figure 5. Duty Cycle Error (Cycle-to-Cycle)
CLK
CLKB
VO(X)+
VO(X), nom
VO(X)
Figure 6. Crossing-Point Voltage
80%
tf
tr
20%
VOL
VOH
Figure 7. Voltage Waveforms
PWRDNB
CLK/CLKB
t(power down)
t(power up)
Figure 8. PWRDNB Transition Timings