An overview of the ATCA® timing and synchronization ... - CiteSeerX
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An overview of the ATCA® timing and synchronization ... - CiteSeerX
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Bussed clocks interface • • • •
Ports: Lines: Performance: Compatibility:
CLK1, CLK2 assigned, only CLK3 is user defined 6 differential pairs Fair, 100 MHz, bussed Compatible
ATCA backplane 100 100
100 100
CLK1_a 100
CLK1_b 100
CLK2_a 100
CLK2_b 100
CLK3_a 100 100
100
CLK3_b 100
ATCA NODE BOARD
ATCA NODE BOARD
ATCA HUB BOARD
ATCA NODE BOARD
2
Base interface • • • •
Ports: Lines: Performance: Compatibility:
Timing and Data hub in slots 1 or 2 All nodes can receive or send 2 distinct timing signal Good; > 200 MHz, 1 GHz?; P2P Changes to ATCA 3.0 required ATCA HUB BOARD SLOT 1 BASE INTERFACE
100 100
100 100
Ethernet TX 100
Ethernet RX 100
Timing A 100
Timing B 100
ATCA backplane
ATCA NODE BOARD
ATCA NODE BOARD
ATCA NODE BOARD
ATCA NODE BOARD
ATCA NODE BOARD
3
Shared Fabric port • • • •
Ports: Lines: Performance: Compatibility:
Timing and Data lines share a fabric port All nodes receive or send up to 6 distinct timing signals Good; ~3 GHz P2P; 3 GHz point to point (P2P);
