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Figure 3-18: ssi architecture – ADLINK PCI-9846 User Manual

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Operation Theory

45

Figure 3-18: SSI Architecture

For PCI-9816/26/46, a dedicate connector is served as system
synchronization interface. Refer to Figure 3-19 for the connector
position. All the SSI signals are routed to the 20-pin connector
from FPGA. With this interface, PCI-9816/26/46 is capable of
achieving multiple module synchronization. Users can use ACL-
SSI-2/ACL-SSI-3/ACL-SSI-4 cables to synchronize 2, 3, or 4 mod-
ules. Please refer to Figure 3-20 for the installation of an ACL-SSI
cable.

Note:

When powering-up or reseting, the synchronization sig-

nals are reset to use internal generated timing signals.

Trigger

Decision

SSI_TRG1

SSI_TRG2

SSI_START_OP

SSI_TIMEBASE

P

X

I I

n

ter

fa

ce or

S

S

I

PXI Trigger

Bus[0:7]

or

SSI

Timing Control

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