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| Ref.: |
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| SpaceWire Router |
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| Issue: | 3.4 |
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| User Manual |
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| Date: | 11th July 2008 |
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| SpaceWire port will wait until the |
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| other end of the link tries to |
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| make a connection and will then |
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| automatically start. |
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13 | Start | ‘0’ |
| When set then the SpaceWire | R/W |
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| link will initiate |
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| defined in the SpaceWire |
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| standard [AD1]: the SpaceWire |
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| port will try to make a connection |
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| with the other end of the link. |
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14 | Disable | ‘0’ |
| When set then the SpaceWire | R/W |
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| link will be disabled as defined in |
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| the SpaceWire standard [AD1]: |
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| the SpaceWire port will not start |
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| and will not respond to any |
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| attempt to make a connection by |
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| the other end of the link. |
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15 | Deactivate | ‘0’ |
| When set the DOUT and SOUT | R/W |
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| serial SpaceWire signals will be |
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| deactivated dependent on the |
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| state of the SpaceWire link |
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| interface. The DOUT and SOUT |
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| deactivate output state |
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| mappings are listed below: |
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| ErrorReset | Æ Deactivate |
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| ErrorWait | Æ Deactivate |
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| Ready | Æ Deactivate |
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| Started | Æ Enabled |
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| Connecting | Æ Enabled |
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| Run | Æ Enabled |
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| Note: DOUT is deactivated one |
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| system clock cycle before SOUT |
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| to ensure simultaneous edges |
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| due to output port deactivation |
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| do not occur. |
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22:16 | Transmitter | Bits 18 to 16 are set |
| Allows the SpaceWire link data | R/W |
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| data signalling | according to the |
| signalling rate to be set. |
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| rate | POR_TX_RATE(2:0) pins. | See section 8.1.6 for details on |
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| (TXRATE) | Bits 22:18 are set to zero. |
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| how to set the TXRATE bits. |
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| Note: bits 22:16 must not be set |
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| to all ones. Bits 22:16 must not |
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| be set to give a transmit rate of |
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| less than 2 Mbits/s. |
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23 | Not Used | - |
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| Preliminary |
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| 114 |
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