XC5VSX50T-2FF665C Xilinx Inc, XC5VSX50T-2FF665C Datasheet - Page 296

• Manufacturer Part Number: XC5VSX50T-2FF665C
• Description: IC FPGA VIRTEX-5 50K 665FCBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-5 SXTr

Specifications of XC5VSX50T-2FF665C

• Number Of Logic Elements/cells: 52224
• Number Of Labs/clbs: 4080
• Total Ram Bits: 4866048
• Number Of I /o: 360
• Voltage - Supply: 0.95 V ~ 1.05 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 665-BBGA, FCBGA
• For Use With: HW-V5-ML506-UNI-G - EVALUATION PLATFORM VIRTEX-5
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Chapter 6: SelectIO Resources
296
HyperTransport Protocol (HT)
Reduced Swing Differential Signaling (RSDS)
BLVDS (Bus LVDS)
The HyperTransport™ protocol (HT) also known as Lightning Data Transport (LDT), is a
low-voltage standard for high-speed interfaces. Its differential signaling based interface is
very similar to LVDS. Virtex-5 FPGA IOBs are equipped with HT buffers.
summarizes all the possible HT I/O standards and attributes supported.
Table 6-37: Allowed Attributes of the HT I/O Standard
Reduced Swing Differential Signaling (RSDS) is similar to an LVDS high-speed interface
using differential signaling. RSDS has a similar implementation to LVDS in Virtex-5
devices and is only intended for point-to-point applications.
Table 6-38: Allowed Attributes of the RSDS I/O Standard
Since LVDS is intended for point-to-point applications, BLVDS is not an EIA/TIA standard
implementation and requires careful adaptation of I/O and PCB layout design rules. The
primitive supplied in the software library for bidirectional LVDS does not use the Virtex-5
FPGA LVDS current-mode driver, instead, it uses complementary single-ended differential
drivers. Therefore, source termination is required.
transmitter termination.
X-Ref Target - Figure 6-89
IOSTANDARD
DIFF_TERM
IOSTANDARD
DIFF_TERM
BLVDS_25
BLVDS_25
Attributes
Attributes
IOB
Figure 6-89: BLVDS Transmitter Termination
www.xilinx.com
165Ω
165Ω
R
R
IBUFDS/IBUFGDS
IBUFDS/IBUFGDS
S
S
TRUE, FALSE
TRUE, FALSE
140Ω
R DIV
Z 0 = 50Ω
Z 0 = 50Ω
R DIFF = 100Ω
Primitives
Primitives
Figure 6-89
RSDS_25
HT_25
INX
IN
OBUFDS/OBUFTDS
OBUFDS/OBUFTDS
shows the BLVDS
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
IOB
N/A
N/A
Table 6-38
BLVDS_25
+
-
ug190_6_83_030506
Data in