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PCITHRU Feature Card
7017 6300–005 5–15
PCITHRU Feature Card
The PCITHRU card (style PCI3-FTH) permits expanded use of a server connected CSBus
by allowing the server to be connected to a channel rack slot (internal or external), thus
enabling connection of additional channels to the same CSBus. See Figure 5–8 for a
representative example. Note the PCITHRU card in the internal CS-4/R3 slot used is to
connect Server A to Domain 0. Slot three is depicted since the default jumper position on
the PCI Bridge Boards shipped from the factory is jumper position 4 which corresponds to
a relative channel slot position of three. Slots 1 and 2 can be used, but require a change to
the jumper position on the PCI Bridge card , see Figure 5–9. Also note in Figure 5–8 that
Server B and Server D are connected to CS-3 in Domain 1 via PCITHRU cards installed in
slots A1 and A2 of the Remote Channel Rack.
0714B
B0
P1
P2
P3
M
A
I
N
T
L
A
N
Domain 1
CS-5
R1
CMF0
CS-5
R2
CS-5
R3
CS-5
R4
B1 B2 B3 B4 B5
CMF1
CMF2
CMF3
CS-5
R7
CS-5
R8
CA322-SCI
CA322-SCI
A5
P1
P2
P3
M
A
I
N
T
L
A
N
Domain 0
CS-5
R1
CMF0
CS-5
R2
CS-5
R4
CS-5
R3
CMF1
CMF2
CMF3
CS-5
R8
CS-5
R7
CA322-SCI
CA322-SCI
CA626-BAS
A4 A3
A2
A1 A0
B8
BT
B7
B6
B5
B0
AT
A4
A3
A2
A1
A0
D8
DT
D7
D6
D5
D0
CT
C4
C3
C2
C1
C0
Remote Channel Rack
CS-0
CS-0
To Server D's
PCI Bridge card
(Via CSB3-15C cable)
CS-3 CS-3
Terminator
*
*
*
Jumper
CSB3-20C Cable Assembly
Feedthru
*
*
CS-4
R1
CS-4
R2
CS-4
R3
CS-4
R4
CS-4
R1
CS-4
R2
CS-4
R3
CS-4
R4
CMF0
CMF1
CMF2
CMF3
B6 A8B7 B8 A7 A6
CMF0
CMF1
CMF2
CMF3
CA626-BAS
B9 A9
To Server B's
PCI Bridge card
(Via CSB3-15C cable)
To Server C's
PCI Bridge card
(Via CSB3-15C cable)
PCI3-FTH
To Server A's
PCI Bridge card
(Via CSB3-15C cable)
PCI3-FTH
PCI3-FTH
For NX5820, IOU functionality only.
For NX5820 K, Multi-IOU functionality
only in Domain 0 or TCU functionality
only in Domain 1.
Figure 5–8. Dual Domain Typical PCITHRU Card Location in the Internal and External Channel
Racks