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UoD_SpW-10X_
UserManual
Issue:
3.4
SpW-10X
SpaceWire Router
User Manual
Date:
11
th
July 2008
Preliminary
123
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.
Reserved
31
8
External time-code interface enable
9
13
01
Not used
Time-code enable
12 11,10
Not used
Time-code flag mode
Figure 9-9 Time-Code Enable Register Fields