89HPES22H16G2 Datasheet, PDF (22/57 Pages) Integrated Device Technology – Supports up to 128 Bytes to 2 KB maximum payload size

IDT 89HPES22H16G2 Data Sheet
System Clock Parameters
Values based on systems running at recommended supply voltages and operating temperatures, as shown in Tables 13 and 14.
Parameter
Description
Condition
Min
Refclk_FREQ
Input reference clock frequency range
100
T_C-RISE
Rising edge rate
Differential
0.6
T_C-FALL
Falling edge rate
Differential
0.6
V_IH
Differential input high voltage
Differential
+150
V_IL
Differential input low voltage
Differential
V_CROSS
Absolute single-ended crossing point
Single-ended
+250
voltage
V_CROSS-DELTA
Variation of V_CROSS over all rising clock
edges
Single-ended
V_RB
T_STABLE
T_PERIOD-AVG
T_PERIOD-ABS
Ring back voltage margin
Time before V_RB is allowed
Average clock period accuracy
Absolute period, including spread-spec-
trum and jitter
Differential
Differential
-100
500
-300
9.847
T_CC-JITTER
Cycle to cycle jitter
V_MAX
Absolute maximum input voltage
V_MIN
Absolute minimum input voltage
-0.3
Duty Cycle
Duty cycle
40
Rise/Fall Matching Single ended rising Refclk edge rate ver-
sus falling Refclk edge rate
Z_C-DC
Clock source output DC impedance
40
Table 9 Input Clock Requirements
1. _{The input clock frequency will be either 100 or 125 MHz depending on signal GCLKFSEL.}
AC Timing Characteristics
Typical
Max
125¹
4
4
-150
+550
+140
+100
2800
10.203
150
+1.15
60
20
60
Unit
MHz
V/ns
V/ns
mV
mV
mV
mV
mV
ps
ppm
ns
ps
V
V
%
%
Ω
Parameter
Description
Gen 1
Gen 2
Min¹ Typ¹ Max¹ Min¹ Typ¹ Max¹
PCIe Transmit
UI
Unit Interval
399.88 400 400.12 199.94 200 200.06
T_TX-EYE
Minimum Tx Eye Width
0.75
0.75
T_{TX-EYE-MEDIAN-to-} Maximum time between the jitter median and maximum
MAX-JITTER
deviation from the median
0.125
T_TX-RISE, T_TX-FALL TX Rise/Fall Time: 20% - 80%
0.125
0.15
T_{TX- IDLE-MIN}
Minimum time in idle
20
20
T_{TX-IDLE-SET-TO-IDLE} Maximum time to transition to a valid Idle after sending
8
8
an Idle ordered set
Table 10 PCIe AC Timing Characteristics (Part 1 of 2)
Units
ps
UI
UI
UI
UI
ns
22 of 57
November 28, 2011