Atmel SpW-10X General Purpose Register, Time-Code Enable Register, SpaceWire Router, User Manual

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

9.5.7 General Purpose Register

The general purpose register address is 262 (0x0000 0106).

The general purpose register contains 32-bits and may be set by a configuration write command to a user defined value as required. It may also be read with a configuration read command. The general purpose register has no effect on the operation of the router.

The least-significant 8-bits of the general purpose register are available on the multiplexed status pins, see section 6.3.

9.5.8 Time-Code Enable Register

The time-code enable register address is 263 (0x0000 0107).

The time-code enable register enables the passing of time-codes out of individual ports on the router. Bits 1 to 8 of the time-code enable register are used to enable time-code distribution through SpaceWire ports 1 to 8 respectively. If one of these bits is set to 1 then the corresponding SpaceWire port is enabled for time-code distribution and will send out a time-code when one is received by the router. For example, if bit-1 in the enable register is set to 1, time-codes are passed to SpaceWire port 1, whereas if bit-1 is set to 0, time-codes are not passed to SpaceWire port 1.

Bit-9 of the time-code enable register controls time-code distribution to the external time-code interface in a similar manner. Note that there is only one external time-code interface although there are two External ports.

The fields of the time-code enable register are shown in Figure 9-9 and described in Table 9-14.

31 13 12 11,10 9 8 1 0

Reserved

Time-code enable

External time-code interface enable

Not used

Time-code flag mode

Not used

Figure 9-9 Time-Code Enable Register Fields

Preliminary 123