GENERAL PURPOSE FIFO
ON VIRTEX-6 FPGA ML605 BOARD
MIDTERM PRESENTATION
STUDENTS:
OLEG KORENEV
EUGENE REZNIK
SUPERVISOR:
ROLF HILGENDORF
1
Semester: spring 2012
CONTENT
1. Project overview
2. Goals
3. Specifications
4. HW Block Diagram
5. MEMORY on ml605
6. AXI4
7. Design Block Diagram
8. Accomplished so far
9. Workflow
2
10. Timeline
PROJECT OVERVIEW
Design and implementation of General Purpose FIFO IP core
which allows usage of external memory (DDR3) as FIFO
storage on Xilinx FPGA device
• Design and implement generic IP core of FIFO
• Design and implement GUI generator of IP core on PC
3
• Create sample design with implemented IP core
OUR GOALS
•Gain experience in hardware development
(VHDL environment)
•Explore and expertise FPGA work environment
•Create design with configurable
• word size
• FIFO depth
•Achieve best performance
•Minimize usage of FPGA resources
4
•Make our world a better place
SPECIFICATIONS
Hardware
• Xilinx Virtex-6 ML605 FPGA Evaluation Kit
• DDR III memory
• Ethernet interface
• PCIe interface
• PC with Ethernet interface
Software
5
• ISE Design Suite Logic Edition Version 13.2
• Modelsim
HW BLOCK DIAGRAM
ML605 BOARD
VIRTEX6
USER
DESIGN
FIFO
CORE
DDR3
MEMORY
ETHERNET/PCIe
6
PC
MEMORY ON ML605
DDR3 memory
• Capacity: 512MB
• Max theoretical bandwidth: 800MT/s*64bit = 6.4GB/sec
Xilinx provides us with DDR3 controller which has AXI Memory
Mapped interface
• AXI bus data width up to 1024 bit
7
• 256 bit for max memory performance, assuming bus works
with 200Mhz
AXI4
Xilinx provides us with AXI4 Memory Mapped bus, which is a
standard bus used in modern ARM SoC.
Features
8
• Separate Address/Control and Data Phases
• burst-based transactions with only start address issued
• separate read and write data channels
DESIGN BLOCK DIAGRAM
HOST STORAGE
DDR3
LOGIC STORAGE
USER STORAGE
MEMORY CONTROLLER
AXI4 BUS (INTERCONNECT)
ARBITER / CONTROLLER
FIFO TO
MEMORY
MEMORY
TO FIFO
FIFO TO
MEMORY
MEMORY
TO FIFO
F
I
F
O
F
I
F
O
F
I
F
O
F
I
F
O
LOGIC
Ethernet Interface
User Interface
HOST
9
ETHERNET
DESIGN BLOCK DIAGRAM
HOST STORAGE
DDR3
LOGIC STORAGE
USER STORAGE
MEMORY CONTROLLER
AXI4 BUS
ARBITER / CONTROLLER
FIFO TO
MEMORY
MEMORY
TO FIFO
FIFO TO
MEMORY
MEMORY
TO FIFO
F
I
F
O
F
I
F
O
F
I
F
O
F
I
F
O
LOGIC
EMULATOR
User Interface
10
User Interface
ACCOMPLISHED SO FAR
External interface
•
•
•
•
Defined basic FIFO interface
Defined word size limitation as 32 up to 1024 bit
Studied features and integrated AXI4 memory mapped bus
Connected DDR3 to AXI bus
Internal architecture
11
• Implemented memory arbiter with basic functionality,
connected to AXI bus as master
• Implemented internal FIFO-To-Memory controller
• Implemented internal Memory-To-FIFO controller
• Implemented basic emulator of user logic for testing
PROBLEMS
Placement in FPGA
• We did not succeeded to place synthesized memory controller
on chip.
Design
12
• In which policy should memory arbiter work
• Ethernet or PCIe?
WORKFLOW
Add AXI Interconnect for enabling User Logic to use memory
Improve AXI arbiter for best performance
Studying usage of Ethernet for communication with PC
• Integrating Ethernet controller with AXI stream interface into
design
Verification of design in hardware
Implementing GUI for generating FIFO IP core
Testing
13
Implementing sample design
TIMELINE
Duration
Integrate AXI
interconnect into design
1 week
Complete AXI arbiter
functionality
2 weeks
Studying and integrating
Ethernet controller into
design
2 weeks
Verification design in
hardware including
communication with PC
3 weeks
Part A Presentation
1 week
17/6
24/6
exams
29/7
5/8
12/8
19/8
26/8
2/9
14
Task