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SpaceWire Router |
| UserManual | |
Issue: | 3.4 | ||
User Manual | |||
Date: | 11th July 2008 | ||
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In Figure
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| Source Path Address | Source Path Address | Source Path Address |
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Source Logical Address | Protocol Identifier | Packet Type, Command, | Status |
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01h |
| Source Path Addr Len |
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Destination Logical Address | Transaction Identifier (MS) | Transaction Identifier (LS) | Reserved |
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| FEh |
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| 00h |
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Data Length (MS) | Data Length |
| Data Length (LS) | Header CRC |
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| 00h | 00h |
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| 04h |
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| Data (MSB) | Data |
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| Data CRC | EOP |
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Last byte transmitted |
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Bits in Packet Type / Command / Source Path Address Length Byte |
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MSB |
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0 |
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| 1 | 1 |
| 1 | Source Path |
| Source Path | |
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| Address Length |
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| Packet Type |
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Figure 7-9 Read-Modify-Write Reply Packet Format
Table 7-13 Read-Modify-Write Reply Packet Fields
Field | Description | Bytes |
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Source Path | Optional source path addresses specified in the command packet. If no | |
Address | source path addresses are specified then the first byte will be the source |
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| logical address. |
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Source Logical | The source logical address specified in the command packet. If source | 1 |
Address | path addresses are not used then the source logical address is the |
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| address of the return packet. |
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Protocol Identifier | The RMAP protocol identifier value 01h. | 1 |
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Command Byte | 1 | |
| command byte indicate this packet is a response packet. |
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Status | The command status is returned in this field. The command status can be | 1 |
| command successful or an RMAP error code as defined in section 7.6.6. |
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Destination | The destination logical address is set to the default value FEh as the | 1 |
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| Preliminary | 69 |