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Fat Pipe Switch Module: 10 GbE-1 GbE Fat Pipe Switch Module
10007175-02 KAT4000 User’s Manual
5-15
PEX 8111 PCIe to PCI Bridge:
The BCM56580 switch is managed by the PCIe connection from the MPC8548 via the
PEX8111 bridge chip. The PCIe to PCI bridge supports forward and reverse transparent
bridging between the PCIe and PCI buses. The bridge’s PCI Express port has a single x1 link
with a maximum throughput of 250 MB/sec per transmit and receive direction. The PEX
8111 is compliant with the PCI Local Bus Specification (rev. 3.0), the PCI to PCI Bridge Archi-
tecture Specification (rev. 1.1), the PCI Express Base Specification (rev. 1.0a) and the PCI
Express to PCI/PCI-X Bridge Specification (rev. 1.0). For more information about this bridge,
reference the PEX 8111 ExpressLane™ PCI Express to PCI Bridge Data Sheet at www.plx-
tech.com.
PLD: The PLD is the interface between the local bus, the BCM56580 switch, and the PEX 8111
PCIe to PCI bridge. It contains registers for fat pipe module control. For more information,
see “10 GbE-1 GbE Fat Pipe Switch Module PLD.”
SPI SROM EEPROM: The 128 Kb EEPROM is used to store PEX 8111 bridge configuration information.
JTAG: A jumper allows the JTAG to bypass the switch and/or the PEX bridge. See
Fig. 5-12 for
details.
Figure 5-13: 10 GbE-1 GbE Fat Pipe Switch JTAG
LEDs: CR2 (green) and CR3-5 (red) on the bottom side of the board are generic LEDs for use by
the firmware.
High-Speed Connectors:
J1 is a 120-pin high-speed connector that provides an interface to the four AMC sites, the
BCM56580 switch, and the PEX 8111 PCIe to PCI bridge. J2 is a 180-pin high-speed connec-
tor that provides an interface to the RTM channel, PCIe channel, PLD, the I
2
C connection to
the processor, and Zone 2 via fabric channels 1 and 2.
J4 and J5 are PMC connectors that attach to a PCI analyzer for debug use only.
Reset: Reset of the 10 GbE-1 GbE fat pipe switch is shown in
Fig.5-14.
PLD
BCM56580
10 GbE-1 GbE
Switch
PEX 8111
Bridge
PLD_TDI PLD_TDO_R PLD_TDO BCM_TDO_R BCM_TDO PEX_TDO_R PEX_TDO
TMS, TCK