89H24NT24G2ZBHLI IDT, 89H24NT24G2ZBHLI Datasheet - Page 17

• Manufacturer Part Number: 89H24NT24G2ZBHLI
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: IDT

Specifications of 89H24NT24G2ZBHLI

• Part # Aliases: IDT89H24NT24G2ZBHLI

System Clock Parameters
AC Timing Characteristics
Values based on systems running at recommended supply voltages and operating temperatures, as shown in Tables 16 and 15.
Refclk
T
T
V
V
V
V
V
T
T
T
T
V
V
Duty Cycle
Rise/Fall Matching
Z
1.
C-RISE
C-FALL
STABLE
PERIOD-AVG
PERIOD-ABS
CC-JITTER
C-DC
IH
IL
CROSS
CROSS-DELTA
RB
MAX
MIN
Parameter
The input clock frequency will be either 100 or 125 MHz depending on signal
PCIe Transmit
UI
T
T
MAX-JITTER
T
T
TX-EYE
TX-EYE-MEDIAN-to-
TX-RISE
TX- IDLE-MIN
Parameter
FREQ
, T
TX-FALL
Input reference clock frequency range
Rising edge rate
Falling edge rate
Differential input high voltage
Differential input low voltage
Absolute single-ended crossing point
voltage
Variation of V
edges
Ring back voltage margin
Time before V
Average clock period accuracy
Absolute period, including spread-spec-
trum and jitter
Cycle to cycle jitter
Absolute maximum input voltage
Absolute minimum input voltage
Duty cycle
sus falling Refclk edge rate
Clock source output DC impedance
Single ended rising Refclk edge rate ver-
Unit Interval
Minimum Tx Eye Width
Maximum time between the jitter median and maxi-
mum deviation from the median
TX Rise/Fall Time: 20% - 80%
Minimum time in idle
Description
CROSS
RB
is allowed
Description
over all rising clock
Table 12 PCIe AC Timing Characteristics (Part 1 of 2)
Table 11 Input Clock Requirements
Condition
GCLKFSEL
Single-ended
Single-ended
Differential
Differential
Differential
Differential
Differential
Differential
17 of 35
399.88
Min
0.125
.
0.75
20
1
Gen 1
Typ
400
9.847
Min
+150
+250
-100
-300
1
100
500
-0.3
0.6
0.6
40
40
Max
400.12
0.125
1
Typical
Min
199.94
0.75
0.15
20
20
1
Gen 2
Typ
200
1
10.203
Max
+1.15
+550
+140
+100
2800
125
-150
150
60
60
4
4
Max
200.06
1
1
Units
April 16, 2013
Unit
MHz
ps
V/ns
V/ns
ppm
UI
UI
UI
UI
mV
mV
mV
mV
mV
ps
ns
ps

%
%
V
V