Atmel SpW-10X user manual Switching Characteristics, Clock and Reset Timing Parameters

SpW-10X	Ref.:	UoD_SpW-10X_
SpaceWire Router		UserManual
	Issue:	3.4
User Manual
	Date:	11th July 2008

10. SWITCHING CHARACTERISTICS

10.1 CLOCK AND RESET TIMING PARAMETERS

The global clock and asynchronous reset timing parameters are listed below.

Table 10-1 Clock and reset timing parameters

Description	Symbol	Value	Units
Clock period minimum value	TCL	31.7(1)	ns, min
		(TBC)
Clock period maximum value	TCH	35(2)	ns, max
		(TBC)
Clock minimum pulse width	TACLK	5	ns, min
Clock input jitter	TCJITTER	+/- 2	ns, max
PLL lock time after reset	TPLLLOCK	20	µs, max
Reset minimum pulse width	TARST	5	ns, min
Reset end till operational	TRST2OP	20	ns, max

(1)The PLL max. frequency is 200 MHz+TBD MHz.

(2)The PLL min. frequency is 100 MHz-TBD MHz.

10.2 SERIAL SIGNALS TIMING PARAMETERS

The data strobe minimum consecutive edge separation timing parameter is defined as shown in the figure below.

DIN(n)
SIN(n)
TDSINS	TDSINS

Figure 10-1 DS minimum consecutive edge separation

The serial signal timing parameters are defined in the table below.

Preliminary 128