T1022NXE7MQA
| Model | T1022NXE7MQA |
| Description | 32-BIT, 1200MHz, RISC PROCESSOR, PBGA780 |
| PDF file | Total 197 pages (File size: 1M) |
| Chip Manufacturer | PHILIPS |
Electrical characteristics
Table 113. PCI Express 2.0 (5 GT/s) differential transmitter output AC
specifications
3
Parameter
Symbol
Min
Typ
Max
Units
Notes
2. The chip's SerDes transmitter does not have C
TX
built-in. An external AC coupling capacitor is required.
3. For recommended operating conditions, see
3.22.4.4.2
PCI Express AC physical layer receiver specifications
This section discusses the PCI Express AC physical layer receiver specifications for 2.5
GT/s and 5 GT/s.
This table defines the AC specifications for the PCI Express 2.0 (2.5 GT/s) differential
input at all receivers. The parameters are specified at the component pins. The AC timing
specifications do not include RefClk jitter.
Table 114. PCI Express 2.0 (2.5 GT/s) differential receiver input AC
specifications
4
Parameter
Unit Interval
UI
Symbol
Min
399.88
Typ
400.00
Max
400.12
Units
ps
Notes
Each UI is 400 ps ± 300 ppm. UI does not
account for spread-spectrum clock
dictated variations.
The maximum interconnect media and
transmitter jitter that can be tolerated by
the receiver can be derived as T
RX-MAX-
JITTER
= 1 - T
RX-EYE
= 0.6 UI.
See Notes 1 and 2.
Maximum time between the T
RX-EYE-MEDIAN-
-
jitter median and maximum
to-MAX-JITTER
deviation from the median.
-
0.3
UI
Jitter is defined as the measurement
variation of the crossing points (V
RX-DIFFp-p
= 0 V) in relation to a recovered
transmitter UI. A recovered transmitter UI
is calculated over 3500 consecutive unit
intervals of sample data. Jitter is
measured using all edges of the 250
consecutive UI in the center of the 3500
UI used for calculating the transmitter UI.
See Notes 1, 2 and 3.
Minimum receiver eye width T
RX-EYE
0.4
-
-
UI
Notes:
1. Specified at the measurement point and measured over any 250 consecutive UIs. The test load in
must be used
as the receiver device when taking measurements. If the clocks to the receiver and transmitter are not derived from the same
reference clock, the transmitter UI recovered from 3500 consecutive UI must be used as a reference for the eye diagram.
2. A T
RX-EYE
= 0.40 UI provides for a total sum of 0.60 UI deterministic and random jitter budget for the transmitter and
interconnect collected any 250 consecutive UIs. The TRX-EYE-MEDIAN-to-MAX-JITTER specification ensures a jitter
distribution in which the median and the maximum deviation from the median is less than half of the total. UI jitter budget
collected over any 250 consecutive transmitter UIs. It must be noted that the median is not the same as the mean. The jitter
median describes the point in time where the number of jitter points on either side is approximately equal as opposed to the
averaged time value. If the clocks to the receiver and transmitter are not derived from the same reference clock, the
transmitter UI recovered from 3500 consecutive UI must be used as the reference for the eye diagram.
QorIQ T1042, T1022 Data Sheet, Rev. 2, 06/2015
Freescale Semiconductor, Inc.
151
