Atmel SpW-10X user manual Router Control Register, SpaceWire Router, User Manual, Preliminary

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

Table 9-9 Router Identity Register Field

Bits	Description	Reset	Usage	Read/Write
		Value
31:0	Router	All bits set	A 32-bit read/write register which may be used to	R/W
	Identity	to zero	hold a unique router identity code for each router in
			a network.

9.5.3 Router Control Register

The router control register address is 258 (0x0000 0102).

The router control register sets various control bits in the SpaceWire router. Router functions which can be controlled are:

•Request an output port to initiate start-up when an input packet addresses that output port but it is not ready to receive data.

•Disconnect a SpaceWire port when no activity is detected on the port for the timeout period duration.

•Enable output port timeouts which request the output port to flush when a packet becomes blocked for a timeout period.

•Enable the a router ports to address themselves i.e. provide a loop-back capability.

The router control register fields are shown in Figure 9-5 and described in Table 9-10.

31 7 6 5 4 3 1 0

Timeout enable

Timeout selection

Enable disconnect-on-silence

Enable start-on-request

Enable self-addressing

Not used

Figure 9-5 Router Control Register Fields

Preliminary 117