Atmel SpaceWire Router SpW-10X Uživatelský manuál stáhnout pdf (Strana 134)

Ref.:

UoD_SpW-10X_

UserManual

Issue:

3.4

SpW-10X

SpaceWire Router

User Manual

Date:

July 2008

Preliminary

134

SpaceWire port to SpaceWire port

Last bit of data into receiver to last bit of data out of transmitter (Worst case where transmitter is

sending a time-code and FCT character before data)

()( )

(

)

TXPERIODSYSPERIODRXPERIODSSDATA TTTT

×= 2385

SpaceWire port to External port

Last bit of data into receiver to external port not empty flag

()( )

SYSPERIODRXPERIODSEDATA TTT ×

×= 85

External port to SpaceWire port

External port write enable to last bit of data out of transmitter (Worst case where transmitter is sending

a time-code and FCT character before data)

()( )

TXPERIODSYSPERIODESDATA TTT ×

×= 234

External port to External port

External port write enable to external port not empty flag.

()

SYSPERIODEEDATA TT ×= 5

10.6.4 Time-code Latency

The maximum time taken to propagate a time code through a routing switch

SpaceWire port to SpaceWire port

Last bit of time-code into receiver to last bit of time-code out of transmitter (worst case where

transmitter has started sending a before time-code data character)

()

(

)

(

)

TXPERIODSYSPERIODRXPERIODSSTC TTTT

×+×= 1665

SpaceWire port to External port

Last bit of time-code into receiver to external port EXT_TICK_OUT rising edge

()

(

)

SYSPERIODRXPERIODSETC TTT ×+×= 85

External port to SpaceWire port

EXT_TICK_IN rising edge to last bit of time-code out of transmitter (worst case where transmitter has

started sending a before time-code data character)

()

(

)

TXPERIODSYSPERIODESTC TTT ×+×= 166

1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 154 155

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