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SpaceWire Router |
| UserManual | |
Issue: | 3.4 | ||
User Manual | |||
Date: | 11th July 2008 | ||
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9.5.10 Destination Key Register
The Destination Key register address is 265 (0x0000 0109).
The destination key register fields are listed in the table below.
Table
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7:0 | DESTKEY | 20h | The destination key is checked when a security key is | R/W |
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| required for RMAP configuration packets to access the |
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| router registers. |
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31:8 | Not used | All bits set | - |
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| to zero |
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9.5.11 Unused Registers and Register Bits
If an unused register address is referenced in a configuration command then the command will not be acted upon and a NACK will be sent in the reply to the command.
All unused bits in valid configuration registers will return ‘0’ when read.
9.5.12 Empty packets
An empty packet received at the configuration port is discarded by the configuration port and no reply packet is sent. An empty packet has no address or cargo bytes and consists only of an EOP.
9.6 WRITING TO A READ-ONLY REGISTER
If a write command is sent with a register address that corresponds to a register whose entire contents is read only, then an appropriate error will be generated. See section 9.4.2.
Preliminary | 127 |