Atmel SpaceWire Router SpW-10X - Manual (Page 42)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
42
CLK
RST
STAT_MUX_OUT POR_SIGNALS
1 2 3 4 5 6 7 8
STAT_MUX_OUT
Inputs Outputs
Figure 5-2 Configuration interface timing specification
The POR configuration signals (POR_SIGNALS) listed in Table 5-6 are loaded into the appropriate
internal configuration registers of the router after RST is de-asserted. To make sure that the POR
configuration signal values are loaded properly they should be held stable for at least three CLK
cycles following RST being de-asserted. The status output STAT_MUX_OUT is driven on the fourth
CLK cycle after RST is de-asserted.
See section 6.3 for information on the operation of the status/power on configuration interface and
section 10.5 for timing details.
5.6 RESET CONFIGURATION SIGNALS
The Reset Configuration signals are listed in Table 5-6. These signals are input on STAT_MUX_OUT
after reset to initialise the router. They are not used at any other time except immediately after reset.
The Reset Configuration signals set relevant bits in the configuration registers (see section 9).
Following reset the values of these signals are synchronously loaded into the router. The timing of the
Reset Configuration signals is illustrated in Figure 6-7.