Beckhoff EtherCAT IP Core for Xilinx FPGAs v2.04e Manuale Utente Scaricare il pdf (Pagina 120)

Distributed Clocks SYNC/LATCH Signals

III-108 Slave Controller – IP Core for Xilinx FPGAs

11 Distributed Clocks SYNC/LATCH Signals

For details about the Distributed Clocks refer to Section I.

11.1 Signals

The Distributed Clocks unit of the IP Core has the following external signals (depending on the ESC

configuration):

EtherCAT

device

LATCH_IN0

SYNC_OUT1

SYNC_OUT0

LATCH_IN1

Figure 59: Distributed Clocks signals

Table 59: Distributed Clocks signals

Signal

Direction

Description

SYNC_OUT0/1

OUT

SyncSignals (alias SYNC[1:0])

LATCH_IN0/1

LatchSignals (alias LATCH[1:0])

NOTE: SYNC_OUT0/1 are active high/push-pull outputs.

11.2 Timing specifications

Table 60: DC SYNC/LATCH timing characteristics IP Core

Parameter

Min

Max

Comment

DC_LATCH

12 ns + x

Time between Latch0/1 events

DC_SYNC_Jitter

11 ns + x

SYNC0/1 output jitter

LATCH0/1

DC_LATCH

Figure 60: LatchSignal timing

SYNC0/1

DC_SYNC_Jitter

Output event time

DC_SYNC_Jitter

Figure 61: SyncSignal timing

EtherCAT IP Core: time depends on synthesis results

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 126

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