Hardware design considerations
Table 119. 1000Base-KX Transmitter AC Specifications (continued)
Parameter
Symbols
Min
Deterministic Jitter TDJ
-
Total Jitter
TTJ
-
Notes:
1. Total jitter is specified at a BER of 10-12.
2. For recommended operating conditions, see Table 3.
Typical
-
-
Max
0.10
0.25
Units
UI p-p
UI p-p
Notes
-
1
3.19.13.2.2 1000Base-KX Receiver AC Specifications
Table below provides the 1000Base-KX receiver AC specification with parameters
guided by IEEE Std 802.3ap-2007.
Table 120. 1000Base-KX Receiver AC Specifications
Parameter
Symbols
Min
Typical
Max
Units
Notes
Receiver Baud Rate RBAUD
1.25-100ppm
1.25
1.25+100pp Gb/s
-
m
Random Jitter
RRJ
-
-
0.15
UI p-p
1
Sinusoidal Jitter,
RSJ-max
-
-
0.10
UI p-p
2
maximum
Total Jitter
RTJ
-
-
See Note 3 UI p-p
2
Notes:
1. Random jitter is specified at a BER of 10-12.
2. The receiver interference tolerance level of this parameter shall be measured as described in Annex 69A of the IEEE Std
802.3ap-2007.
3. Per IEEE 802.3ap-clause 70.
4. The AC specifications do not include Refclk jitter.
5. For recommended operating conditions, see Table 3.
4 Hardware design considerations
4.1 System clocking
This section describes the PLL configuration of the chip.
QorIQ T2080 Data Sheet, Rev. 3, 03/2018
NXP Semiconductors
149