Sundance SMT381 2004 - Manual (Page 33)

3.11 RSL Interface (RSL not yet available)
3.11.1 RSL Connector and Pinout Definition
The Rocket Serial Link (RSL) is a serial based communications interconnection
standard that is capable of transfer speeds of up to 2.5GBit/s per link. Up to four links
can be combined to form a Rocket Serial Link Communications Channel (RSLCC)
that is capable of data transfer up to 10GBit/s.
Each RSL is made up of a differential Tx and Rx pair. A single RSL can thus transfer
data at 2.5GBit/s in both directions at the same time. Rocket Serial Link
interconnections are based on the RocketIO standard used on Xilinx Virtex-II Pro
FPGAs. Rocket Serial Links uses Low Voltage Differential Signaling (LVDS).
The SMT381-VP uses a subset of the RSL specification. Four RSLs are combined to
form a 10GBit/s RSLCC. One RSLCC per DAC channel is implemented on the
SMT381-VP. The RSLCC is thus capable to transfer a raw data stream to the DAC in
real time.
The connector used for the RSL interface is a 0.8mm pitch differential Samtec
connector. The part number for this connector is: QSE-014-01-F-D-DP-A. The RSL
connector takes the place of the optional 3
rd and 4 th SHB connector on a TIM module.
The following diagram shows the position of the RSL connectors on the SMT381-VP:
RSL
B
Top Primary TIM Connector
Bottom Primary TIM Connector
SHB
B
SHB
A
RSL
A
Samsung
DDR266 SDRAM
Samsung
DDR266 SDRAM
Daughter Card Expansion Connector
Power
Daughter Card
Power Conn
Figure 14. Rocket Serial Link Interface.
There are two additional RSL footprints underneath the module (by default not
mounted) in the same place as top RSL connectors. By mounting these two
connectors and not the top two it is possible to plug the SMT381-VP straight onto an
RSL enabled carrier without having to interconnect the links with cables.