Toshiba Strata AirLink, Installation Manual

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RWIU System Installation
RWIU Additional Information
Strata AirLink Installation Guide 5/00
57
RWIU Additional Information
The following paragraphs describe:
♦ RWIU/WWIS interface unit
♦ Changing the initial configuration
♦ Changing the communications port
♦ Checking the RWIU and Base Station software versions
♦ Viewing log messages
♦ Resetting the Base Stations and RWIU
♦ Upgrading the RWIU and Base Stations
♦ Changing the Base Station number
RWIU/WWIS Interface Unit
The Strata AirLink Wireless System interfaces to Strata DK16, DK16e, DK40, DK40i, DK280,
and DK424 systems with an RWIU Interface Unit. The RWIU PCB (shown in
Figure 28 ) functions
as a protocol converter between the Base Stations on one side and the Strata DK system on the
other. The RWIU is the “master” PCB, generating timing and synchronization signals and the
WWIS PCB is the “slave.”
The PCBs have LEDs that indicate a continuous status of operation for both. They are shown in
Figure 29 on Page 16-59 . The switches and jumper are described in Tables 11 ~ 13 on Page 44 .
The PCB has an Intel® 80C186EC, 25 MHz (provided by a 50 MHz oscillator), 16-bit
Complementary Metal Oxide Semiconductor (CMOS) embedded Central Processing Unit (CPU)
with the following:
♦ External 16-bit data bus and 20-bit address bus
♦ Four Direct Memory Access (DMA) channels
♦ Three programmable timer counters
♦ Eight programmable external interrupt controller inputs
♦ Two integrated communication channels Universal Asynchronous Receiver/Transmitter
(UARTS)
♦ Integrated Watch Dog Timer (WDT)
♦ Two flash memories (expandable by two)
♦ Two CMOS Static Random Access Memories (SRAMs) (expandable by two)
♦ In-circuit test points
The RWIU has the following interfaces:
♦ Backplane (P1)
♦ Synchronous RS485 bus (J5)
♦ Serial line (J7)
♦ External power supply (J8)
♦ JTAG Mach programming (J11)