DE3 User Manual
17
2.5
Using the HSTC Connectors
The High Speed Terasic Connector (HSTC) is a high speed expansion interface defined by Terasic
Technologies. The DE3 board is equipped with 8 HSTC connectors (J1 ~ J8), which can be used to
connect the Stratix III FPGA with daughter boards or the other DE3 boards. The detailed
specifications of the HSTC connector are described below:
4 HSTC Connector Groups:
The eight HSTC connectors on the DE3 board are divided into 4 groups: HSTC A, HSTC B,
HSTC C, and HSTC D. Each group has a male and female HSTC connector on the top and
bottom side of the DE3 board, respectively. In addition, both the male and female HSTC
connector shares the same I/O pins except JTAG and I2C interface
.
I/O Distribution:
Each HSTC connector has 120 single-ended I/O (60 pair differential channels), 10
single-ended IO with 5 each for clock input and output (2 differential clock input and output
channel), JTAG and I2C bus. In addition, there are three banks on a HSTC connector. The I/O
pins used in differential transceiver channels on bank 1 support true LVDS inout. On bank 2
and 3, the I/O pins used in differential transmitter channels support emulated LVDS via a
termination resistor, and the differential receiver channels support true LVDS, as shown in.
Figure 2.12.
In addition, there is a software utility named “DE3_HSTC” which can perform
the connection test between the I/O pins of the HSTC connector and Stratix III FPGA. The
detailed information about this utility can be found in
Appendix D : DE3_HSTC Utility
.
Configurable I/O Standards:
The I/O pins of the HSTC connector support many I/O standards with different voltage level,
as the V
CCIO
supplied to FPGA bank I/O is configurable. Users can choose the I/O standard of
HSTC connector in the software utility “DE3 System Builder”.
Compatible with HSMC Connector :
The HSTC connector is not only designed to be backward-compatible with the HSMC
products, but also provides more I/O pins for further connection. The pin assignments of bank
1 and 2 are exactly the same. The only difference between the HSMC and HSTC connector is
the pin assignments for bank 3. For HSTC connector, all the I/O pins on the bank 3 are well
defined.
Figure 2.13
shows the I/O distribution of the bank3 for the HSTC and HSMC
connector.
Table B-1
shows the pin compatible list for HSTC and HSMC connector.
Summary of Contents for Altera DE3
Page 1: ...Altera DE3 Board ...
Page 67: ...DE3 User Manual 64 Figure 5 5 Plug USB Devices into DE3 Figure 5 6 Display Device Information ...
Page 75: ...DE3 User Manual 72 Figure 5 14 Display SD Card Information for the SD Card Demonstration ...
Page 79: ...DE3 User Manual 76 Figure 5 19 Parameter Settings in DDR2 Controller ...
Page 114: ...DE3 User Manual 111 Figure D 5 The reported message of the invalid I O pins ...