XC4VLX100-11FF1148C Datasheet, PDF (18/58 Pages) Xilinx, Inc – DC and Switching Characteristics

Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
Table 26: RocketIO Transmitter Switching Characteristics
Description
Symbol
Conditions
Min
Typ
Serial data rate, -10
Serial data rate, -11
F_GTX
F_GTX
Data
Rate (Gb/s)
0.622
0.622
TJ
RJ
PRBS7
6.5
DJ
TJ
RJ
PRBS7
5.0
DJ
TJ
RJ
PRBS7
4.25
DJ
TJ
TX Jitter Generation⁽³⁾
RJ
PRBS7
3.125
DJ
TJ
RJ
PRBS7
2.5
DJ
TJ
RJ
PRBS7
1.25
DJ
TJ
RJ
PRBS31
0.622
DJ
TX rise time⁽²⁾
T_RTX
20% – 80%
90
TX fall time⁽²⁾
T_FTX
20% – 80%
90
TXUSRCLK frequency
For slower speed grades =
MaxDataRate/32
TXUSRCLK2 frequency
TXUSRCLK duty cycle
T_TXDC
40
TXUSRCLK2 duty cycle
T_TX2DC
40
Differential output skew
T_ISKEW
12
Electrical idle transition time
TXOOB_Transition
15
Notes:
1. UI = Unit Interval.
2. Default attributes, measured at 2.5 Gb/s.
3. Peak-to-Peak values measured relative to 1e-12 Error rate. Default attributes. TX feedback divider (TXPLLNDIVSEL) = 10.
Max
3.125
6.5
0.50
0.35
0.30
0.45
0.30
0.25
0.40
0.25
0.21
0.28
0.14
0.14
0.25
0.18
0.12
0.12
0.10
0.06
0.08
0.06
0.04
250
250
60
60
20
Units
Gb/s
Gb/s
UI ⁽¹⁾
ps
ps
MHz
MHz
%
%
ps
ns
DS302 (v3.7) September 9, 2009
www.xilinx.com
Product Specification
18