Xilinx Virtex-5 RocketIO GTP User Manual

Virtex-5 RocketIO GTP Transceiver User Guide www.xilinx.com 121
UG196 (v1.3) May 25, 2007
TX OOB/Beacon Signaling
R
(see “Shared PMA PLL,” page 60) is set to 1.5 GHz, and PLL_TXDIVSEL_OUT for each
channel is set to either 1 (for a 3.0 Gb/s SATA2 rate) or 2 (for a 1.5 Gb/s SATA1 rate).
Note:
If the SATA rate needs to be changed at run time (e.g. for SATA autonegotiation), the
GTP_DUAL Dynamic Reconfiguration port (see “Dynamic Reconfiguration Port (DRP),” page 87) can
be used to change the appropriate PLL_TXDIVSEL_OUT attribute. The COM sequence timing is
adjusted automatically.
When a TXCOMSTART operation completes, RXSTATUS[0] is driven High for one
RXUSRCLK2 cycle. Be careful not to use the output of RXSTATUS[0] without
synchronizing it to the TXUSRCLK2 domain if TXUSRCLK2 and RXUSRCLK2 are driven
by separate clocks.

Xilinx Virtex-5 RocketIO GTP Specifications

General

Brand	Xilinx
Model	Virtex-5 RocketIO GTP
Category	Transceiver
Language	English