Controller Bus; Control Inputs; Station Alarm Inputs/Tbos Interface - Alcatel MDR-8000 User Manual

Controller Bus

3.17.1
The Relay Interface communicates with the AE-37( ) Controller card via the processor bus
and the data bus. The processor bus, consisting of three address lines, two control lines,
and a clock, is applied to a XCVR. The data bus contains the eight data lines (D0-D7) and
is applied to a separate transceiver. Interface with the relay transceivers is provided by the
XCVR data bus. When commanded by the AE-37( ) Controller, the decoder/DEMUX
decodes and demultiplexes the address and enables the appropriate relay XCVR via the
EN2-9 controls. The controller can then write alarm/status/control information to the relay
XCVRs, or read alarm/status/control inputs from the relay XCVRs. Further descriptions of
the controller interface signals follow:
• Address lines A0 through A3 – HCMOS inputs. 100K Ohm pull-ups. Used by address
decoders to enable output registers and input buffers.
• Buffered bidirectional data lines D0 through D7 – HCMOS input/outputs. 10K Ohm
pull-ups. Used to write data to output registers and read present bits or data from
input buffers.
• ECLK – 2 MHz bus clock. HCMOS input. 100K Ohm pull-up.
• R/WF Read/Write False. HCMOS input. 100K Ohm pull-up. A logic 1 indicates data is
being read from an input buffer or the present bits. A logic 0 indicates data is being
written to an output register.
• Relay Intfc CSF – Relay Interface Card Select False. HCMOS input. 100K Ohm pull-up.
Chip select for relay interface card. Active low.
3.17.2

Control Inputs

Nine buffered control inputs are provided. The inputs are diode protected from voltages out-
side of the 0 to +5 V range, and have a 10K Ohm resistor for current limiting purposes. In
addition, each input has a 100K Ohm pull-up resistor.
• Switch Transmitter (SWITCH TX) – buffered HCMOS input, sends signal to controller
module to activate the transmitter that is currently not carrying traffic.
• Switch Receiver (Switch RX) – buffered HCMOS input, sends signal to controller mod-
ule to activate the receiver that is currently not carrying traffic.
• Switch I/O Interface (SWITCH I/O) – buffered HCMOS input, sends signal to controller
module to activate the stand-by I/O interface module.

Station Alarm Inputs/TBOS Interface

3.17.3
Each radio shelf can accept/report up to 12 different user-defined station-type alarms, and, if
provisioned
Station Alarm 13-16
total of 16. Station alarms 13 through 16 share pins on connector J305 with the four TBOS
inputs and outputs. TBOS inputs and outputs are enabled by software when the radio is provi-
sioned
TBOS Display 1-8
The alarm/status input signals are buffered HCMOS inputs, diode protected from voltages
outside of the 0 to +5 V range, with 10 kilohm current limiting (series) resistor and 100
kilohm pull-up resistor. A logic 0 indicates an alarm state. A logic 1 (or open) indicates a
non-alarm state.
, the radio can accept an additional four station alarms, for a
. When TBOS is enabled station alarms 13 through 16 are disabled.
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