SpW-10X

 

 

Ref.: UoD_SpW-10X_

 

 

 

 

 

SpaceWire Router

 

 

UserManual

 

 

 

 

 

 

 

Issue:

3.4

 

 

 

 

 

 

 

User Manual

 

 

 

 

 

 

 

 

 

 

 

Date:

11th July 2008

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the link using autostart or

 

 

 

 

 

 

 

 

the link is started by

 

 

 

 

 

 

 

 

configuration command

 

 

 

 

 

 

 

 

then the port will not be

 

 

 

 

 

 

 

 

disconnected on silence.

 

 

 

 

 

 

 

 

Events which cause the

 

 

 

 

 

 

 

 

disconnect on silence

 

 

 

 

 

 

 

 

timeout to be reset are

 

 

 

 

 

 

 

 

Input port data

 

 

 

 

 

 

 

 

 

read.

 

 

 

 

 

 

 

 

 

Output port data

 

 

 

 

 

 

 

 

 

write.

 

 

 

 

 

 

 

 

 

 

 

5

Enable start

Set by the input signal

When set the arbiter will

 

R/W

 

 

 

on request

POR_START_ON_REQ_N.

request the SpaceWire

 

 

 

 

 

 

 

 

output port to start-up if the

 

 

 

 

 

 

 

 

router receives a packet

 

 

 

 

 

 

 

 

destined for the output port.

 

 

 

 

 

 

 

 

Note: if the output port link

 

 

 

 

 

 

 

 

disable bit is set then the

 

 

 

 

 

 

 

 

link will not start.

 

 

 

 

 

 

 

 

 

 

 

6

Enable Self

Set by the input signal

When set input ports are

 

R/W

 

 

 

Addressing

POR_ADDR_SELF_N

permitted to address

 

 

 

 

 

 

 

 

themselves.

 

 

 

 

 

 

 

 

 

If this bit is not set and a

 

 

 

 

 

 

 

 

packet is to be routed

 

 

 

 

 

 

 

 

through the same port then

 

 

 

 

 

 

 

 

an address error is reported

 

 

 

 

 

 

 

 

and the packet is discarded.

 

 

 

 

 

 

 

 

When this bit is not set and

 

 

 

 

 

 

 

 

a group adaptive routing

 

 

 

 

 

 

 

 

packet is received (a packet

 

 

 

 

 

 

 

 

which can be routed

 

 

 

 

 

 

 

 

through two or more ports,

 

 

 

 

 

 

 

 

dependent on the group

 

 

 

 

 

 

 

 

adaptive routing table

 

 

 

 

 

 

 

 

contents) which can be

 

 

 

 

 

 

 

 

routed through the port it

 

 

 

 

 

 

 

 

arrived on then the packet

 

 

 

 

 

 

 

 

is routed through one of the

 

 

 

 

 

 

 

 

other ports and not the port

 

 

 

 

 

 

 

 

on which the packet arrived

 

 

 

 

 

 

 

 

on. An address error is not

 

 

 

 

 

 

 

 

reported.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31:7

Not Used

All bits set to zero

-

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

Preliminary

119

Page 119
Image 119
Atmel SpW-10X user manual 119