Virtex-6 CXT Family Data Sheet
DS153 (v1.6) February 11, 2011
Product Specification
22
TJ480
480 Mb/s
–
0.1
UI
DJ480
–
0.03
UI
Notes:
1.
Using same REFCLK input with TXENPMAPHASEALIGN enabled for up to four consecutive GTX transceiver sites.
2.
Using PLL_DIVSEL_FB = 2, 20-bit internal data width. These values are NOT intended for protocol specific compliance determinations.
3.
All jitter values are based on a bit-error ratio of 1e-12.
4.
PLL frequency at 1.5625 GHz and OUTDIV = 1.
5.
PLL frequency at 2.5 GHz and OUTDIV = 2.
6.
PLL frequency at 2.5 GHz and OUTDIV = 4.
Table 32: GTX Transceiver Receiver Switching Characteristics
Symbol
Description
Min
Typ
Max
Units
FGTXRX
Serial data rate
RX oversampler not enabled
0.600
–
FGTXMAX
Gb/s
RX oversampler enabled
0.480
–
0.600
Gb/s
TRXELECIDLE
TIme for RXELECIDLE to respond to loss or restoration of data
–
75
–
ns
RXOOBVDPP
OOB detect threshold peak-to-peak
60
–
150
mV
RXSST
Receiver spread-spectrum
Modulated @ 33 KHz
–5000
–
0
ppm
RXRL
Run length (CID)
Internal AC capacitor bypassed
–
512
UI
RXPPMTOL
Data/REFCLK PPM offset
tolerance
CDR 2nd-order loop disabled
–200
–
200
ppm
CDR 2nd-order loop enabled
–2000
–
2000
ppm
JT_SJ3.75
3.75 Gb/s
0.44
–
UI
JT_SJ3.125
3.125 Gb/s
0.45
–
UI
JT_SJ3.125L
0.45
–
UI
JT_SJ2.5
0.5
–
UI
JT_SJ1.25
0.5
–
UI
JT_SJ675
675 Mb/s
0.4
–
UI
JT_SJ480
480 Mb/s
0.4
–
UI
SJ Jitter Tolerance with Stressed Eye(2) JT_TJSE3.125
Total Jitter with Stressed
3.125 Gb/s
0.70
–
UI
JT_SJSE3.125
Sinusoidal Jitter with
3.125 Gb/s
0.1
–
UI
Notes:
1.
Using PLL_RXDIVSEL_OUT = 1, 2, and 4.
2.
All jitter values are based on a bit-error ratio of 1e–12.
3.
The frequency of the injected sinusoidal jitter is 80 MHz.
4.
PLL frequency at 1.5625 GHz and OUTDIV = 1.
5.
PLL frequency at 2.5 GHz and OUTDIV = 2.
6.
PLL frequency at 2.5 GHz and OUTDIV = 4.
7.
Composite jitter with RX equalizer enabled. DFE disabled.
Table 31: GTX Transceiver Transmitter Switching Characteristics (Cont’d)
Symbol
Description
Condition
Min
Typ
Max
Units