Sundance SMT398 - Manual (Page 34)

Version 1.2.0 Page 34 of 52 SMT398 User Manual
You must refer to the latest SUNDANCE SDB specification for technical information
on how it works.
You must make sure to use the SMT6500 package V1.0 and above (which contains
the VHDL for it).
Constraint File Signal Names
According to the SUNDANCE SHB specification , 5 Byte-interfaces (from 0 to 4) can
be implemented on the 60 pins of a SHB connector. Each Byte interface has its own
CLK, WEN, REQ and ACK.
I defined the signal names going from the FPGA to an SHB connector by assuming 2
Hw configurations per SHB connector: Hw0 and Hw1.
So, when in Half Word configuration:
• 16-bit data D(0 to 15)
• CLK0 is borrowed from Byte configuration 0, WEN1, REQ1 and ACK1 are
borrowed from Byte configuration 1 to make configuration Hw0 control signals
and
• CLK3 is borrowed from Byte configuration 3, WEN4, REQ4 ACK4 are
borrowed from Byte configuration 4 to make configuration Hw1 control signals.
The connector names are A, B, C and D with J8 as A, J9 as B, J10 as C and J11 as D.
(See
Figure 19:SMT398 Components placement-Top view )