DS083 Datasheet, PDF (22/430 Pages) Xilinx, Inc – Summary of Features

R
Virtex-II Pro and Virtex-II Pro X Platform FPGAs: Functional Description
PACKAGE
PINS
MULTI-GIGABIT TRANSCEIVER CORE
FPGA FABRIC
AVCCAUXRX _{2.5V RX}
VTRX _{Termination Supply RX}
Power Down
RXP
RXN
Deserializer
Clock
Manager
Comma
Detect
Realign
CRC
Check
8B/10B
Decoder
RX
Elastic
Buffer
Channel Bonding
and
Clock Correction
TXP
TXN
Serializer
Output
Polarity
TX
FIFO
8B/10B
Encoder
CRC
GNDA _{TX/RX GND}
AVCCAUXTX _{2.5V TX}
VTTX _{Termination Supply TX}
Figure 10: RocketIO Transceiver Block Diagram
POWERDOWN
RXRECCLK
RXPOLARITY
RXREALIGN
RXCOMMADET
ENPCOMMAALIGN
ENMCOMMAALIGN
RXCHECKINGCRC
RXCRCERR
RXDATA[15:0]
RXDATA[31:16]
RXNOTINTABLE[3:0]
RXDISPERR[3:0]
RXCHARISK[3:0]
RXCHARISCOMMA[3:0]
RXRUNDISP[3:0]
RXBUFSTATUS[1:0]
ENCHANSYNC
CHBONDDONE
CHBONDI[3:0]
CHBONDO[3:0]
RXLOSSOFSYNC
RXCLKCORCNT
TXBUFERR
TXFORCECRCERR
TXDATA[15:0]
TXDATA[31:16]
TXBYPASS8B10B[3:0]
TXCHARISK[3:0]
TXCHARDISPMODE[3:0]
TXCHARDISPVAL[3:0]
TXKERR[3:0]
TXRUNDISP[3:0]
TXPOLARITY
TXINHIBIT
LOOPBACK[1:0]
TXRESET
RXRESET
REFCLK
REFCLK2
REFCLKSEL
BREFCLK
BREFCLK2
RXUSRCLK
RXUSRCLK2
TXUSRCLK
TXUSRCLK2
DS083-2_04_090402
Output Swing and Pre-emphasis
The output swing and pre-emphasis levels of the RocketIO
MGTs are fully programmable. Each is controlled via
attributes at configuration, but can be modified via partial
reconfiguration.
The programmable output swing control can adjust the dif-
ferential output level between 400 mV and 800 mV in four
increments of 100 mV.
With pre-emphasis, the differential voltage swing is boosted
to create a stronger rising waveform. This method compen-
sates for high-frequency loss in the transmission media that
would otherwise limit the magnitude of this waveform. Lossy
transmission lines cause the dissipation of electrical energy.
This pre-emphasis technique extends the distance that sig-
nals can be driven down lossy line media and increases the
signal-to-noise ratio at the receiver.
DS083 (v4.7) November 5, 2007
Product Specification
www.xilinx.com
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