Demonstration
18
1.
Observe the orientation of the HSMC connector when connecting the THDB-H2S to the Cyclone III
Starter Board.
2. Users
MUST
short Pin 1 and Pin 2 of the J8 on the THDB-H2S to force the voltage level to 2.5V to
match the 2.5V IO pins of the Cyclone III board.
3.
Configure J9 of the THDB-H2S according to the logic level of the Santa Cruz daughter board (refer to
Table 3.2)
4.
Please note that there are two LVDS pairs on the HSMC connector: the HSMC_CLK_p1/n1 (form a
close loop via R3) and HSMC_CLKIN_p2/n2 (form a close loop via R4). Therefore, using any one of the
signal in a LVDS pair under single-ended mode will prevent users from using the other signal in the
same pair.