Atmel SpaceWire Router SpW-10X 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