FS6233-01
Motherboard Clock Generator IC
AMERICAN MICROSYSTEMS, INC.
September 2000
Table 15: AC Timing Specifications, continued
Unless otherwise stated, all power supplies = 3.3V, no load on any output, and ambient temperature TA = 25°C. Parameters denoted with an asterisk ( * ) represent nominal characterization data and
are not currently production tested to any specific limits. MIN and MAX characterization data are ± 3σ f rom typical. Spread spectrum modulation is disabled except for Rise/Fall time measurements.
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
MIN.
TYP. MAX. UNITS
PCI_0:9 Clock Outputs
Duty Cycle *
Clock Skew *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
CK66_0:2 Clock Outputs
Duty Cycle *
Clock Skew *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
REF_0:1 Clock Outputs
Duty Cycle *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
CK48_0:1 Clock Outputs
Duty Cycle *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tsk(o)
One clock output relative to another at 1.5V
tj(∆P)
From rising edge to rising edge at 1.5V, CL = 30pF
tr min
Measured at 0.4V – 2.4V; CL = 10pF
0.5
tr max
Measured at 0.4V – 2.4V; CL = 30pF
tf min
Measured at 2.4V – 0.4V; CL = 10pF
0.5
tf max
Measured at 2.4V – 0.4V; CL = 30pF
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tsk(o)
One clock output relative to another at 1.5V
tj(∆P)
From rising edge to rising edge at 1.5V, CL = 30pF
tr min
Measured at 0.4V – 2.4V; CL = 10pF
0.5
tr max
Measured at 0.4V – 2.4V; CL = 30pF
tf min
Measured at 2.4V – 0.4V; CL = 10pF
0.5
tf max
Measured at 2.4V – 0.4V; CL = 30pF
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tj(∆P)
From rising edge to rising edge at 1.5V, CL = 20pF
tr min
Measured at 0.4V – 2.4V; CL = 10pF
1.0
tr max
Measured at 0.4V – 2.4V; CL = 20pF
tf min
Measured at 2.4V – 0.4V; CL = 10pF
1.0
tf max
Measured at 2.4V – 0.4V; CL = 20pF
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tj(∆P)
From rising edge to rising edge at 1.5V, CL = 20pF
tr min
Measured at 0.4V – 2.4V; CL = 10pF
1.0
tr max
Measured at 0.4V – 2.4V; CL = 20pF
tf min
Measured at 2.4V – 0.4V; CL = 10pF
1.0
tf max
Measured at 2.4V – 0.4V; CL = 20pF
55
%
500
ps
500
ps
2.0
ns
2.0
ns
55
%
250
ps
300
ps
2.0
ns
2.0
ns
55
%
1000
ps
4.0
ns
ns
4.0
55
%
350
ps
4.0
ns
4.0
ns
ISO9001
10
9.18.00