1. New Crate Controller Development
A VMEbus Controller with Gigabit Ethernet
A custom board designed and developed at OSU
Based on XILINX Virtex-II Pro
Custom firmware.
Optical transceiver (for Gbit Ethernet)
Communicates with stand-alone PC (in USC55) via Ethernet
Status
Prototype board produced.
Gbit Ethenet and VME firmware being developed.
Firmware has modular design. Each module simulated as it is written.
Aiming to be ready for beam test in June.
Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004

2. Firmware Components Clock Manager Master Control Ethernet Interface
External FIFO Interface (for VME commands)
Configuration Memory Interface (Flash Memory)
VME Interface
Command and Control Registers
Error and Statistics Monitor
Reset Handling
Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004

3. Ethernet Interface Rocket IO – (16 bit interface) Receive Processing
Clock Recovery
SERDES
8B10B Encoding
Generates and checks CRC
Receive Processing
Transmit Processing
Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004

4. Receive Processing Components
MAC Frame Processor
Identifies SOP, Preamble, SOF
Matches MAC Address (Multicast, Broadcast)
Stores MAC Source Address
Checks Length
Frame FIFO
Stores Payload Data from Packet
Keeps good Frames, Drops bad Frames
Saves Lengths and MAC’s for each incoming Packet
Payload Decode
Readout FIFO
Interpret Protocol and Decode Commands
Generates “OPCODE” for Master Controller
Error Monitoring
Validates incoming Frames
Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004

5. Transmit Processing Components
Packet Builder
FIFO for collecting Data before sending
Track Length and Type of Data
Tags “New” packets and packet “Fragments”
Separate Path for Priority Packets
Transmit MAC Frame
Maintains Idle State
Checks Data Type and Length from Packet Builder
Builds Protocol Header based on Type
Sequences Packet from various Sources:
(SOP, Preamble, SOF, MAC Destination, MAC Source, Length, Protocol, Data, Filler, CRC, EOP, Carrier Extend, Inter Packet Spacing)
Error Monitoring
Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004

6. Ben Bylsma, USCMS-EMU Week, Apr 16-17, 2004