ADLINK aTCA-N700 - Manual (Page 44)

aTCA-N700 HW Users Guide
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8.1.3. PCI Express Interface
The PCIe interface is compatible with the PCI Express Base Specification, Revision
1.0a. The features of the interface are:
• 4 Lanes supporting x4, x2, x1 link configurations at 2.5Gbps serial lane speed
• Three PCIe interfaces with 2x 1 Lane and 1x 2 Lane on the board
• Root complex(RC) and endpoint(EP) configurations
• 32bit and 64bit address support
• DMA
• One Virtual channel (VC0)
• Max Payload size at 256bytes
• Host/Agent Mode Configuration(Default)
PCIe@1x
PCIe_CLK
SD[02]
P2041
BCM56842
PCIe
PCIe CLK
CN6880_A
PCIe CLK
CN6880_B
PCIe CLK
PCIe
PCIe
PCIe@1x
PCIe@2x
25
M_
XT
AL
IC
S557-0
5
SD[03]
SD[04/05]
Figure 8-4 Host Interface – PCI-e
PCI-e configuration for both the NPUs and the switch fabric.
8.1.4. I2C (TWSI) Interface
The P2041 provides I2C interfaces with following features:
• 4x I2C interface support
• Multiple master operation
• Arbitration lost interrupt with automatic mode switching from master to slave
• Calling address identification interrupt
• START and STOP signal generation/detection
• Acknowledge bit generation/detection
• Bus busy detection
• Software programmable clock frequency
• Software selectable acknowledge bit
• On-chip filtering for spikes on the bus