Cinterion
®
LTE Terminals Hardware Interface Description
4.2 Electrical Specifications of the Application Interface
60
ELSxT_HID_v04 2018-09-04
Confidential / Preliminary
Page 51 of 102
4.2.5 Ethernet Interface
The Ethernet interface is implemented as 10/100 Base-T RJ45 Ethernet according to the IEEE
802.3 Ethernet standards, including PoE+ (IEEE 802.3at, backward compatible to IEEE
802.3af). For further characteristics see also Section 3.7.
Please refer to Appendix B: Ethernet Setup and Usage for details on how to setup and use the
LTE Terminals with Ethernet interface.
8-pin, 12-
pin connec-
tors for:
GPIO,
Power,
I
2
C and
ASC1, SPI
I2CDAT IO Open drain IO
V
OL
min = 0.3V at I = -3mA
V
OH
max = VCCref
Rpullup = 2.2kOhm
V
IL
max = 0.35V
V
IH
min = 1.3V
V
IH
max = VCCref
According to the I
2
C Bus
Specification Version 2.1
for the fast mode a rise
time of max. 300ns is per-
mitted. There is also a
maximum V
OL
=0.4V at
3mA specified.
The value of the pull-up
depends on the capactive
load of the whole system
(I
2
C Slave + lines). The
maximum sink current of
I2CDAT and I2CCLK is
4mA.
If unused keep lines
open.
I2CCLK IO
Table 23: GPIO interface specifications (requirements)
Function Signal name IO Signal form and level Comment
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