M320 FPC Components

Each M320 FPC has the following components:

FPC card carrier, which has the PIC slots
One Packet Forwarding Engine consisting of Layer 2/Layer 3 Packet Processing ASICs, Switch Interface ASICs, Internet Processor ASICs, and a memory subsystem (MMB), which includes the Queuing and Memory Interface ASICs
Midplane connectors and power circuitry
Processor subsystem (PMB), which has a 288-MHz CPU, system controller, 256 megabytes (MB) of SDRAM, and two Fast Ethernet interfaces
Two LEDs, which are on the craft interface above the FPC, that display the status of the FPC
FPC offline button, which is on the craft interface above the FPC