Xilinx 7 Series User Manual page 130

Chapter 4: Receiver
Table 4-5: Use Mode 3—RX Termination
X-Ref Target - Figure 4-5
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Use External AC Term
Mode Coupling Voltage
3 On 800 mV
BOARD
~100 nF
~100 nF
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Max Swing
Suggested Protocols and Usage Notes
mV
DPP
Protocols:
• Optical IF (SONET/SDH/OTU)
• HD/SD-SDI
• XAUI (1,600 mV
• GbE
• PCIe
2,000
• Interlaken
Attribute Settings:
• RX_CM_SEL[1:0] = 2'b11
• RXLPM_INCM_CFG = 1'b1
• RXLPM_IPCM_CFG = 1'b0
• RX_CM_TRIM[3:0] = 4'b1010
FPGA
ACJTAG RX
MGTAVTT
50Ω
MGTAVTT
50Ω
MGTAVTT
ACJTAG RX
Figure 4-5: Use Mode 3
7 Series FPGAs GTP Transceivers User Guide
)
DPP
RX_CM_SEL [1:0] = 2'b11
+
–
RX_CM_TRIM[3:0]
Varies from
4'b0000 – 4'b1111
800mV = 4'b1010
UG482_c4_115_020413
UG482 (v1.9) December 19, 2016