Novatel OEM719, Инструкция по установке и эксплуатации

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APPENDIX E Receiver Card Interface Examples
OEM7 Installation and Operation User Manual v4 223
E.6 Ethernet Port
OEM7 receivers, except the OEM719, provide a 10/100 Ethernet port with auto-negotiation. The
Ethernet interface is disabled by default and must be configured. See the Ethernet Configuration
for instructions on Ethernet device configuration. The PHY layer is based on the Texas Instru-
ments TKL106 Ethernet PHY.
PHY terminations are provided on the OEM7 receiver card and a 3.3 V output is presented to bias
the Ethernet magnetics. The 3.3 V power supplied by the OEM7 receiver card is not to be used
for any purposes other than biasing the Ethernet magnetics.
A reference schematic is shown in Figure 63: Ethernet Reference Schematic below. The ferrite
bead is included as an EMI de-risk contingency and may not be necessary.
Figure 63: Ethernet Reference Schematic
OEM729 OEM7700 OEM7720
Connector P1803 P2001 P1901
ETH_BIAS
Receive: 3
Transmit: 6
56 56
4 58 58
ETH_TD- 5 60 60
2 57 57
ETH_RD- 1 59 59
Table 56: Ethernet Pin Designation
Run 100 Ω differential pairs over unbroken reference planes directly to the jack. Ensure the
integrated magnetics in the jack meet the specifications in
Table 57: Ethernet Transformer Char-