Constraints file signal names, Comports, Figure 10: qdr constraints file signal names – Sundance SMT398 User Manual
Page 29: Q w n
Version 1.2.0
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SMT398 User Manual
Constraints File Signal Names
Q W N
QDR
Control signal name:
SA = Address bus
D = input Data bus of QDR
Q = output Data bus of QDR etc...
for other control signals,
See QDR memory datasheet
using the links above
Active level:
N = Active low
Figure 10: QDR Constraints file signal names
Comports
These communication links follow Texas Instrument C4x standard. They are 8-bit
parallel inter-processor ports of the ‘C4x processors.
The 398 follows the C40 TIM standard and as such provides 6 links. These are given
the numbers 0, 1, 2, 3, 4 and 5. The following figure shows how the 2 configuration
Comports (FPGA ) are connected on the TIM.
They are guaranteed for a transfer rate of 20MB/s, which could lead, using the 6
Comports available to a 120MB/s transfer rate.
The Comport drives at 3.3v signal levels.
Additional information on the standard is available in the
chapter 12: Communication ports and the Texas Instrument Module Specification.