HW-FMC-XM105-G Xilinx Inc, HW-FMC-XM105-G Datasheet - Page 27

• Manufacturer Part Number: HW-FMC-XM105-G
• Description: CARD, CONNECTIVITY, FMC XM105
• Manufacturer: Xilinx Inc

Specifications of HW-FMC-XM105-G

• Kit Contents: FMC XM105 Debug Card, Welcome Letter, 4x Mounting Screws, 2x Standoffs
• Features: VITA 57.1 FMC HPC Connector, Power Good LEDs
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FMC XM105 Debug Card User Guide
UG537 (v1.2) September 24, 2010
14. Clocks
Two clock sources
applications:
•
•
A pair of differential SMA connectors can be utilized to provide a high-precision
differential clock or a single-ended clock to the board. Virtex-6 FPGA and Spartan-6 FPGA
devices require single-ended clocks on the “P” input of an IOB pair. See Xilinx FPGA
documentation for additional information.
Consult Xilinx FMC- supported board user guide for interface voltages, I/O standard
support on FPGA clock pins; and to determine LVDS input clock termination
requirements, either on the printed-circuit board or using an IBUFGDS primitive for FPGA
on-chip termination.
Table 1-14: Clock Sources Routed to Mezzanine FMC HPC J17 Connector
A Silicon Labs Si570 IIC programmable clock source provides a low-jitter clock with a user-
programmable output frequency from 10 to 810 MHz. As shipped, the CLK0_M2C clock
frequency is 156.25 MHz. The component installed on the XM105 is factory programmed
with parameters in
Table 1-15: Characteristics of Si570 Component
For additional information on this component, including reprogramming the clock
frequency through the IIC serial bus interface, consult the Silicon Labs Si570 Data Sheet at
https://www.silabs.com.
Notes:
1. Clock sources are available for FMC LPC and FMC HPC board
2. The Si570 provides a LVDS output clock.
Connector J17 Pin
Output Format
Output Enable Polarity
Temperature Stability
Frequency Range
Six-Digit Startup
Power Supply
IIC Address
applications.
Differential SMA connectors
Si570 IIC LVDS clock
Si570 Characteristic
FMC HPC
H4
H5
G2
G3
(Table
Table
CLK0_M2C_N
CLK0_M2C_P
CLK1_M2C_N
Signal Name
CLK1_M2C_P
1-14) are provided for FMC LPC and FMC HPC board
1-15.
www.xilinx.com
(2)
(2)
Si570 U2 pin 4
Si570 U2 pin 5
Source
SMA J10
SMA J9
156.250 MHz
10–810 MHz
50 ppm
XM105
LVDS
High
3.3V
x5D
(1)
Board Technical Description
27