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

Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
RocketIO DC Input and Output Levels
Table 12 summarizes the DC input and output specifica-
tions of the Virtex-4 FPGA RocketIO Multi-Gigabit Serial
Transceivers. Figure 1 shows the single-ended output volt-
Table 12: RocketIO DC Specifications
age swing. Figure 2 shows the peak-to-peak differential out-
put voltage. Consult the Virtex-4 RocketIO Multi-Gigabit
Transceiver User Guide for further details.
DC Parameter
Symbol
Conditions
Min Typ
Max
Units
Peak-to-Peak Differential Input Voltage
Single-Ended Input Range
Common Mode Input Voltage Range
Single-Ended Output Voltage Swing^{(2, 3)}
Common Mode Output Voltage Range⁽³⁾
Peak-to-Peak Differential Output Voltage^{(2, 3)}
Signal detect threshold
Electrical idle amplitude
RocketIO MGT Clock DC Input Levels
DV_IN
SE_VIN
V_ICM
Internal AC Coupled
Internal AC Coupled
Internal AC Coupled
Bypassed Internal AC
Coupled ⁽¹⁾
V_OUT
V_TCM
DV_PPOUT
RXOOB_VDPP RX
TXOOB_VDPP TX
110
2400
mV
0
V_TRX
mV
100
V_TRX – 100 mV
800
mV
450
725
mV
1000
mV
900 1050
1400
mV
TBD
65
mV
Peak-to-Peak Differential Input Voltage
V_IDIFF
2 x | V_MGTCLKP – V_MGTCKLN | 100 600
2000
mV
Differential Input Resistance
R_IN
71 105
124
Ω
Notes:
1. The maximum V_TRX is 1.26V when bypassing the internal AC coupled V_ICM. V_TRX must be less than or equal to AVCCAUXRX.
2. The output swing and pre-emphasis levels are selected using the attributes discussed in Chapter 4: PMA Analog Considerations in the Virtex-4
RocketIO Multi-Gigabit Transceiver User Guide for details.
3. V_TTX is 1.5 ± 5%; different amplitudes possible with adjusted DAC values.
+V TXP
TXN
0
+V
Figure 1: Single-Ended Output Voltage Swing
DV_OUT
DS302_02_031708
0
DV_PPOUT
–V _TXP–TXN
Figure 2: Peak-to-Peak Differential Output Voltage
DS302_03_031708
DS302 (v3.7) September 9, 2009
www.xilinx.com
Product Specification
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