Oracle e-series, Setup Manual

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2-8 Identifying the Internal Components
Each UART contains a large transmit and receive FIFO to optimize data throughput as
detailed below.

Data rates up to 12 Mbps

Fractional Baud Rates up to 12 Mbps

128 byte TX FIFO

384 byte RX FIFO

7, 8, or 9 data bits - 1 or 2 stop bits - Odd, even, mark, space, or no parity

Automatic Hardware Flow Control - (RTS/CTS or DTR/DSR)

Automatic Software Flow Control (Xon/Xoff)

Multi-drop and Half-Duplex Modes
On the Base Station E-Series Main Board, the two channel UART drives the following
I/O Panel connectors:

URAT1
–
COM5 RS232 RJ45

URAT2
–
Base Station E-Series MCU
TI Fuel Gauge IC bq20z80
The Fuel Gauge resides in the optional Totex Smart Battery Pack. The fuel gauge uses
TI’s Impedance Track technology to provide information on remaining battery capacity
(mAh), state of charge (%), run-time to empty (mins), battery voltage (mV), and battery
temperature (°C).
To determine the battery state of charge (SOC), the fuel gauge measures cell voltage,
temperature, and current. The current is measured by sensing the voltage drop across a
small-value resistor in series with the battery. The fuel gauge accurately predicts the
battery capacity and other operational characteristics such as state-of-charge (SOC), time-
to-empty (TTE), time-to-full (TTF), as well as an SOC interrupt signal to the MCU. Both
the Tablet and optional Base Station Battery State of Charge is available at the WEC7
power properties icon located in the system tray.
The Base Station E-Series Battery Status page of the Diagnostics Utility displays many of
the fields available in the fuel gauge.
TI Charger IC bq24170
The bq24170 is highly integrated stand-alone single cell Li-Ion switch mode battery
charger with two integrated N-channel power MOSFETs. It provides battery detection,
pre-conditioning, charge monitoring, and charge termination. It also closely monitors
battery pack temperature to allow charging in a preset window.
The charger is configured to charge the three-cell Base Station E-Series Li-Ion battery
pack in three phases—preconditioning, constant current, and constant voltage.
Reassembling Base Station E-Series
The following procedure describes how to connect the cable bundle and reassemble the
Base Station E-Series.
1.
Place the top cover to the right of the base as shown in the figure below and connect
the multi-function cable bundle to CN8.