34-Conductor Cable Assemblies (2X17); Ucf Location Constraints - Xilinx Spartan-3A User Manual

Chapter 15: Expansion Connectors

34-Conductor Cable Assemblies (2x17)

The J2 and J15 headers were designed specifically to connect to 34-conductor flat ribbon
cable assemblies that use a 2x17, 0.1-inch form factor.
Table 15-5: Example 34-Conductor Cable Assemblies
Distributor Manufacturer
3M
Digi-Key
CW Industries
www.digikey.com
CW Industries

UCF Location Constraints

Figure 15-7
"Transmit" headers, including the I/O pin assignment and the I/O standard used.
130
Distributor
Part Number
M3AAK-3420K-ND
C3AAG-3406G-ND
C3AAG-3406M-ND
C3AAG-3418G-ND
C3AAG-3418M-ND
provides the User Constraint File (UCF) constraints for the "Receive" and
# High-Speed LVDS "Receive" Connector (RX)
NET "RX_CLK_N" LOC = "A11"
NET "RX_CLK_P" LOC = "A12"
NET "RX_N<0>" LOC = "B4"
NET "RX_P<0>" LOC = "A4"
NET "RX_N<1>" LOC = "A5"
NET "RX_P<1>" LOC = "B6"
NET "RX_N<2>" LOC = "A6"
NET "RX_P<2>" LOC = "A7"
NET "RX_N<3>" LOC = "A8"
NET "RX_P<3>" LOC = "A9"
NET "RX_N<4>" LOC = "C10"
NET "RX_P<4>" LOC = "A10"
# High-Speed LVDS "Transmit" Connector (TX)
NET "TX_CLK_N" LOC = "AB10" |
NET "TX_CLK_P" LOC = "AA10" |
NET "TX_N<0>" LOC = "AA3"
NET "TX_P<0>" LOC = "AB2"
NET "TX_N<1>" LOC = "AA4"
NET "TX_P<1>" LOC = "AB3"
NET "TX_N<2>" LOC = "AB6"
NET "TX_P<2>" LOC = "AA6"
NET "TX_N<3>" LOC = "AB7"
NET "TX_P<3>" LOC = "Y7"
NET "TX_N<4>" LOC = "AB8"
NET "TX_P<4>" LOC = "AA8"
Figure 15-7: UCF Location Constraints for "Receive" and "Transmit" Headers
www.xilinx.com
Type
Flat ribbon cable, multi-color, twisted
pair, gold finish
Flat ribbon cable, gray, gold finish
Flat ribbon cable, multi-color, gold finish
Flat ribbon cable, gray, gold finish
Flat ribbon cable, multi-color, gold finish
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
IOSTANDARD = LVDS_33 ;
IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
| IOSTANDARD = LVDS_33 ;
Spartan-3A/3AN Starter Kit Board User Guide
R
Length
50.80 cm
(20 inch)
15.24 cm
(6 inch)
45.72 cm
(18 inch)
UG334 (v1.0) May 28, 2007