IDT89HPES24T6ZGBX IDT, Integrated Device Technology Inc, IDT89HPES24T6ZGBX Datasheet - Page 12

• Manufacturer Part Number: IDT89HPES24T6ZGBX
• Description: IC PCI SW 24LANE 6PORT 420-SBGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT89HPES24T6ZGBX

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 89HPES24T6ZGBX

System Clock Parameters
AC Timing Characteristics
IDT 89HPES24T6 Data Sheet
Values based on systems running at recommended supply voltages and operating temperatures, as shown in Tables 13 and 14.
Refclk
Refclk
T
V
T
R
1.
2.
3.
4.
PCIe Transmit
UI
T
T
MAX-JITTER
T
T
T
IDLE
T
DATA
T
PCIe Receive
UI
T
R
jitter
SW
T
Parameter
TX-EYE
TX-EYE-MEDIAN-to-
TX-RISE
TX- IDLE-MIN
TX-IDLE-SET-TO-
TX-IDLE-TO-DIFF-
TX-SKEW
RX-EYE (with jitter)
, T
The input clock frequency will be either 100 or 125 MHz depending on signal REFCLKM.
ClkIn must be AC coupled. Use 0.01 — 0.1 µF ceramic capacitors.
RCUI (Reference Clock Unit Interval) refers to the reference clock period.
AC coupling required.
Parameter
F
FREQ
DC
2
, T
TX-FALL
Input reference clock frequency range
Duty cycle of input clock
Rise/Fall time of input clocks
Differential input voltage swing
Input clock jitter (cycle-to-cycle)
Termination Resistor
Unit Interval
Minimum Tx Eye Width
Maximum time between the jitter median and maximum
deviation from the median
D+ / D- Tx output rise/fall time
Minimum time in idle
Maximum time to transition to a valid Idle after sending
an Idle ordered set
Maximum time to transition from valid idle to diff data
Transmitter data skew between any 2 lanes
Unit Interval
Minimum Receiver Eye Width (jitter tolerance)
Description
Description
Table 10 PCIe AC Timing Characteristics (Part 1 of 2)
4
Table 9 Input Clock Requirements
12 of 33
Min
399.88
399.88
Min
100
0.6
0.7
0.4
40
50
50
1
Typical
Typical
400
500
400
110
90
50
.9
1
0.2*RCUI
Max
400.12
400.12
Max
1300
0.15
125
125
20
20
1.6
60
1
1
Units
April 23, 2008
Unit
RCUI
Ohms
MHz
ps
UI
UI
ps
UI
UI
UI
ps
ps
UI
ps
%
V
3