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Figure 1-2 PCI/PCI-X/PCIe I/O Subsystem Block Diagram
PORT
Ports From
Chassis Rear
PORT
Ports From
Chassis Front
Single - Rope
Dual - Rope
Single - Rope
ZX1 PCI-X Bridge
PCIx-66
PCIx-133
PCIx-133
Public PHP I/O Slots
LANLAN
Single - Rope
PCIx-66
Quad - Rope
X8 PCI-E
Private Slots
Core LAN
Core Disk Storage
DISK
BK PLN
Quad - Rope
X8 PCI-E
DHPC
Express
Switch
Dual - Rope
X8 PCI-E
ZX1 PCI-X Bridge
ZX1 PCI-X Bridge
ZX2 PCI-E Bridge
ZX2 PCI-E Bridge
ZX2 PCI-E Bridge
ZX1 PCI-X Bridge
Common IO Board
Single - Rope
DMD
DMD
Bridge Video
USB
SP
BMC
PCI-33
LPC
PDH
ROM
RTC
SRAM
COM
MP LAN
VGA
USBUSB
Common Display Panel board
DVD
TPM
USB
USB
IPMB
32bit
ZX1 PCI Bridge
Unified Core IO Board
I2C
COM
UART
PCI/PCI-X IOBP
On the 10 slot PCI/PCI-X IOBP there are a total 8 Public slots (PCI-X mode1/2), 2 Private Fast-core
slots (PCI-X mode1), and 1 Private Slow-core UCIO slot (PCI 32-bit/33-MHz). The eight Public
slots are further subdivided into three speed/bandwidth configurations:
• Four PDHP (Public Dual Hot-plug), which operate at 64-bit/66-MHz PCI-X
• Two PSHP-SDR (Public Single Hot-plug - Single Data Rate), operating at 64-bit/133-MHz
PCI-X
• Two PSHP-DDR (Public Single Hot-plug - Double Data Rate), at 64-bit/266-MHz (133-MHz
double clocked) PCI-X mode2
Four 66-MHz PCI/PCI-X slots are shared in groups of two. Shared slots have many speed and
mode change restrictions during hot-plug add or remove operations. For more information on
PCI/PCI-X card configuration and restrictions, see “PCI/PCI-X/PCIe Configurations” (page 62).
Four of the server PCI/PCI-X slots are not shared. Two of the nonshared slots are 133 MHz
PCI/PCI-X, and two of the slots are 266-MHz PCI/PCI-X. Shared slots have many speed and
mode change restrictions during hot-plug add or remove operations.
Table 1-1 PCI/PCI-X I/O Rope Groups
Hot Swap /
OL*
FunctionSpeedBitsPCI BusRope NumbersSlot #
NCore I/O (Private)66 MHz64181, 2
YPCI-X 2.0, DDR (Public)266 MHz64212, 13, 14, 15
(Quad
Bandwidth)
3
YPCI-X 2.0, DDR (Public)266 MHz6434, 5, 6, 7 (Quad
Bandwidth)
4
YHigh-Speed PCI-X (Public)133 MHz64410, 11 (Dual
Bandwidth)
5
Server Subsystems 27