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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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| the link using autostart or |
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| the link is started by |
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| configuration command |
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| then the port will not be |
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| disconnected on silence. |
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| Events which cause the |
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| disconnect on silence |
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| timeout to be reset are |
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| • | Input port data |
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| read. |
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| • | Output port data |
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| write. |
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5 | Enable start | Set by the input signal | When set the arbiter will |
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| on request | POR_START_ON_REQ_N. | request the SpaceWire |
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| output port to |
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| router receives a packet |
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| destined for the output port. |
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| Note: if the output port link |
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| disable bit is set then the |
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| link will not start. |
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6 | Enable Self | Set by the input signal | When set input ports are |
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| Addressing | POR_ADDR_SELF_N | permitted to address |
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| themselves. |
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| If this bit is not set and a |
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| packet is to be routed |
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| through the same port then |
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| an address error is reported |
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| and the packet is discarded. |
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| When this bit is not set and |
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| a group adaptive routing |
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| packet is received (a packet |
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| which can be routed |
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| through two or more ports, |
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| dependent on the group |
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| adaptive routing table |
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| contents) which can be |
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| routed through the port it |
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| arrived on then the packet |
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| is routed through one of the |
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| other ports and not the port |
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| on which the packet arrived |
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| on. An address error is not |
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| reported. |
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31:7 | Not Used | All bits set to zero | - |
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Preliminary | 119 |