SpW-10X

Ref.:

UoD_SpW-10X_

 

 

 

 

SpaceWire Router

 

UserManual

 

 

 

 

 

Issue:

3.4

 

 

 

 

 

 

User Manual

 

 

 

 

 

 

Date:

11th July 2008

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Protocol

The RMAP protocol identifier value 01h.

 

 

 

1

 

Identifier

 

 

 

 

 

 

 

 

 

 

 

 

Command

Read single address reply command byte. The packet type bits in the

 

1

 

Byte

command byte indicate this packet is a response packet.

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

Destination

The destination logical address is set to the default value FEh as the

 

 

1

 

logical

SpaceWire router does not have a logical address.

 

 

 

 

 

address

 

 

 

 

 

 

 

 

 

 

 

 

Transaction

The transaction identifier identifies the command packet and reply packet with a

 

2

 

Identifier

unique number. The transaction identifier in the reply packet is copied from the

 

 

 

 

 

command packet and returned in this field, so that the command and the

 

 

 

 

 

corresponding reply have the same transaction identifier value.

 

 

 

 

 

 

 

 

 

Data

The data length field is set to 4 bytes as this is a single read command.

 

3

 

Length

 

 

 

 

 

 

 

 

 

 

 

 

Header

The header CRC used to detect errors in the header part of the command

 

1

 

CRC

packet. See section 7.6.7 for CRC generation.

 

 

 

 

 

 

 

 

 

 

 

 

Data

The data read from the registers in the device.

 

 

 

4

 

 

 

 

 

 

Data CRC

The data CRC used to detect errors in the data part of the reply packet. See

 

1

 

 

 

section 7.6.7 for CRC generation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.6.3 Read Incrementing Command

The read incrementing address characteristics of the SpaceWire router are defined in Table 7-8.

Preliminary

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Atmel SpW-10X user manual Read Incrementing Command