Texas Instruments DS90UB926QSEVB, User Manual

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16 DS90UB926QSEVB User’s Guide Sept 2012
4. Eye Monitor – CMLOP/N
Top view of CML access points (upper right hand side of EVB when looking at the front side of the EVB).
Connector J15 connects CMLOP and J16 connects to CMLON.
Bottom view of CML access points (upper left hand side of the EVB when looking at the back side of the
EVB).
CMLOP/N must be enabled by register, 0x56[3] = 0, to be able to monitor the FPD-Link III serial stream.
5. Appendix – Use of optional Rosenberger HSD connector (J1)
Unpopulate R68 and R71 0201 sized 0
Ω
resistor. R68 and R71 pads are on the back side
of the EVM. This will cut the stub traces to J12 and J13 (SMAs). Populate J1 (Rosenberger
HSD connector).
R71
0 ohm
0201
RIN-_SMA
VSS
RIN+ R68
0 ohm
0201
RIN-
J12
SMA
1
2
3
4
5
VSS
RIN-
J13
SMA
1
2
3
4
5
J1
HSD_2X2_open
1 2
3 4
5 6
7 8
9 10 11
12 13
RIN+
RIN+_SMA
VSS
CMLOP
CMLON
CMLOP
CMLON