xc2v1000-4fg256c Xilinx Corp., xc2v1000-4fg256c Datasheet - Page 17

• Manufacturer Part Number: xc2v1000-4fg256c
• Description: Virtex-ii Platform Fpgas
• Manufacturer: Xilinx Corp.

Table 8: SelectI/O-Ultra Differential Buffers With On-Chip Termination
Figure 11
standards. For a complete list, see the
DS031-2 (v3.5) November 5, 2007
Product Specification
LVDS 2.5V
LVDS Extended 2.5V
Conventional
DCI Transmit
Conventional
Receive
Conventional
Transmit
DCI Receive
DCI Transmit
DCI Receive
Bidirectional
Reference
Resistor
Recommended
Z 0
(1)
I/O Standard Description
provides examples illustrating the use of the HSTL_I_DCI, HSTL_II_DCI, HSTL_III_DCI, and HSTL_IV_DCI I/O
R
Note:
1. Z 0 is the recommended PCB trace impedance.
Virtex-II DCI
Virtex-II DCI
VRN = VRP = R = Z 0
50 Ω
HSTL_I
N/A
Z 0
Z 0
Z 0
Z 0
V CCO /2
V CCO /2
R
R
V CCO
Virtex-II DCI
V CCO
Virtex-II DCI
2R
2R
2R
2R
Virtex-II Platform FPGA User
Figure 11: HSTL DCI Usage Examples
Virtex-II DCI
Virtex-II DCI
Virtex-II DCI
V CCO
VRN = VRP = R = Z 0
2R
V CCO
2R
2R
2R
V CCO /2
V CCO
V CCO /2
2R
2R
R
HSTL_II
External Termination
R
50 Ω
Z 0
Z 0
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Z 0
Z 0
Z 0
LVDSEXT_25
V CCO /2
V CCO /2
R
R
LVDS_25
V CCO
V CCO
2R
2R
Virtex-II DCI
Virtex-II DCI
V CCO
Virtex-II DCI
2R
2R
2R
2R
Virtex-II DCI
Virtex-II DCI
Virtex-II Platform FPGAs: Functional Description
Guide.
IOSTANDARD Attribute
VRN = VRP = R = Z 0
HSTL_III
Z 0
Z 0
50 Ω
Z 0
Z 0
N/A
V CCO
V CCO
R
R
V CCO
Virtex-II DCI
V CCO
Virtex-II DCI
R
R
On-Chip Termination
LVDSEXT_25_DCI
Virtex-II DCI
LVDS_25_DCI
Virtex-II DCI
Virtex-II DCI
V CCO
VRN = VRP = R = Z 0
V CCO
V CCO
R
R
V CCO
V CCO
R
R
HSTL_IV
R
50 Ω
Z 0
Z 0
Z 0
Z 0
Z 0
V CCO
V CCO
R
R
V CCO
Virtex-II DCI
V CCO
DS031_65a_100201
Virtex-II DCI
Module 2 of 4
V CCO
Virtex-II DCI
R
R
R
9