Corp. SpaceWire Router User Manual

Ref.:
UoD_SpW-10X_
UserManual
Issue:
3.4
SpW-10X
SpaceWire Router
User Manual
Date:
11
th
July 2008
Preliminary
130
Table 10-3 External port timing parameters
Description Symbol Value Units
Write enable setup time to CLK rising edge T
EXTWRSU
5 ns, min
Write enable hold time after CLK rising edge T
EXTWRHLD
5 ns, min
Write data setup time to CLK rising edge T
EXTIDATSU
5 ns, min
Write data hold time after CLK rising edge T
EXTIDATHLD
5 ns, min
CLK rising edge to full flag output T
EXTFFCKO
5 ns, min
CLK rising edge to full flag output T
EXTFFCKO
18 ns, max
Read enable setup time to CLK rising edge T
EXTRDSU
5 ns, min
Read enable hold time after CLK rising edge T
EXTRDHLD
5 ns, min
CLK rising edge to read data output T
EXTODATCKO
5 ns, min
CLK rising edge to read data output T
EXTODATCKO
18 ns, max
CLK rising edge to empty flag output T
EXTEFCKO
5 ns, min
CLK rising edge to empty flag output T
EXTEFCKO
18 ns, max
10.4 TIME-CODE INTERFACE TIMING PARAMETERS
The following diagrams define the timing parameters for the time-code input and output
EXT_TICK_IN
SEL_EXT_TIME
EXT_TIME_IN
T
TCLKIL
T
TCLKIH
T
TCLKISU
T
TCLKIHLD
Figure 10-4 Time-Code Input Interface