Embedded usb-blaster clocks, Transceiver channels, Embedded usb-blaster clocks –23 – Altera Transceiver Signal Integrity Development Kit, Stratix V GX Edition User Manual
Page 31: Transceiver channels –23
Chapter 2: Board Components
2–23
Transceiver Channels
July 2012
Altera Corporation
Transceiver Signal Integrity Development Kit
Stratix V GX Edition Reference Manual
Embedded USB-Blaster Clocks
A separate 6-MHz crystal and 24-MHz oscillator are dedicated for the embedded
USB-Blaster circuitry. The 6-MHz crystal is used to clock the FTDI FT245 USB PHY
device while the 24-MHz oscillator is used to clock the MAX II CPLD device. Refer to
“FPGA Programming over Embedded USB-Blaster” on page 2–14
for the embedded
USB-Blaster implementation.
lists the crystal oscillators component references and manufacturing
information.
Transceiver Channels
The transceiver signal integrity development board dedicates 31 (out of 32) 12.5-Gbps
transceiver channels from both the left and right sides of the device to various
backplane connectors—SFP+ and XFP cages, and SMA connectors. One 12.5-Gbps
channel on the 28 Gbps side of the device is a dedicated CMUclk input from SMA
connectors.
1
For the Stratix V GT device migration support, the four 28-Gbps ATT channels
connects to the MMPX connectors.
Table 2–16. Crystal Oscillator Component References and Manufacturing Information
Board
Reference
Description
Manufacturer
Manufacturer
Part Number
Manufacturer Website
X1
Crystal oscillator, 6.0 MHz, SMD
ESC Inc.
ECSX-60-32-5P-TR
Y1
Crystal oscillator, CMOS, 2.5 V,
24.000 MHz, SMT, ±50ppm
Epson
SG-310SDF 24.0000M-
B3