PXH842 User’s Guide –
Dolphin Interconnect Solutions
Page 7
Transparent Use Cases
The PXH842 card may be used as both a Host card and a Target card. A Host and Target card can be used as a pair or the Host card
can be used with a compliant Target device. The supported use cases and the DIP switch settings are summarized in
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Please use the table to identify the correct DIP switch settings.
Transparent Use Case A - 1 Host
–
Single Expansion Configuration
The Host system has a PXH842 adapter configured for Transparent Host
operation and a direct x4, x8 or x16 link to a PXH842 configured for
Transparent Target operation.
Connecting the cables for single expansion, x16 link
To establish an x16 link, a given port number should be connected to
the same port number on the other card.
Always connect a cable from Port #x to Port #x
Port Host A
Port Expansion
P1
P1
P2
P2
Table 1: Required x16 cabling
A failure connecting any of the cables will cause the link to re-train to x8 or x4.
Connecting the cables for single expansion, x8 link
To establish an x8 link, please connect a cable from port P1 on the host card to port P1 on the target card. If the cards are
populated with 4 FireFly’s, you can connect the cable between any port.
Transparent Use Case B
–
1 Host - Dual Expansion Configuration
The host has a PXH842 adapter configured for Transparent Host operation and a direct x4 or x8 cable connection is used to connect
two independent downstream target systems.
Connecting the cables for Single Node Dual expansion, x8 link
Connect a cable between any port on the host card to the selected expansion.
Transparent Use Case C
–
1 Host - Quad Expansion
Configuration
This configuration is only available with the PXH845 adapter card.
Figure 1: Use Case C
Figure 2: Use Case D
Figure 3: Use Case E
