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ML365 Virtex-II Pro QDR II SRAM Mem. Board
1-800-255-7778
UG066 (v1.0) June 29, 2004
Chapter 2:
Architecture
R
Block Descriptions
This section describes the major blocks of the ML365 board.
FPGA
The ML365 uses a Xilinx XC2VP20FF1152C-6 Virtex-II Pro device. This device is packaged
in a 1152-pin BGA package with a -6 speed grade. Refer to
for
a complete pinout of the Virtex-II Pro device.
Memories
The ML365 board supports three types of memories in two speed grades.
QDR II SRAM (U5, Banks 6 and 7)
The QDR II SRAM component connected to FPGA I/O banks 6 and 7 is a 165-pin, 200 MHz
Samsung K7R323684M or NEC UPD44165364F5 SRAM in a Ball Grid Array package. This
component has a 36-bit wide data interface.
QDR II SRAM (U11, Banks 2 and 3)
The QDR II SRAM component connected to FPGA I/O banks 2 and 3 is a 165-pin, 200 MHz
Samsung K7R323684M or NEC UPD44165364F5 SRAM. This component has a 36-bit wide
data interface.
QDR II SRAM (U12, Banks 0 and 1)
The QDR II SRAM component connected to FPGA I/O banks 0 and 1 is a 165-pin, 250 MHz
Samsung K7R323684M or NEC UPD44165364F5 SRAM. This component has a 36-bit wide
data interface.
RS232 (J5)
The ML365 board provides an RS232 serial interface using a Maxim MAX3316ECUP
device. The maximum speed of this device is 460 Kb/s. The RS232 interface is accessible
through a male DB9 serial connector.
Clocks
The ML365 board has 200 MHz and 250 MHz LVPECL (2.5 V) clock oscillators on board. It
also has two SMA connectors for external differential clock inputs.
200 MHz LVPECL Clock (Y1)
The LVPECL clock is an Epson EG-2121CA-200 MHz oscillator with a differential output.
The oscillator runs at 200 MHz
±
100 PPM with an operating voltage of 2.5 V
±
5%. It is
terminated at the FPGA with a 50 ohm resistor. FPGA pins AH17 and AJ17 in Bank 4 serve
as the OSC_200M_N and OSC_200M_P inputs, respectively.
250 MHz LVPECL Clock (Y2)
The LVPECL clock is an Epson EG-2121CA-250 MHz clock oscillator with a differential
output. This oscillator runs at 250 MHz
±
100 PPM with an operating voltage of 2.5 V
±
5%.
Product Not Recommended for New Designs