WL102
Counters
The two 16-bit counters are provided which are configured
by setting a reload value. When enabled, the counters
decrement continuously at 10MHz, generating a terminal
count signal to the processor and automatically reloading
the reload value when the count reaches zero.
The terminal count outputs are internally connected to the
8051 timer inputs when using the internal 8051, and to
external pins when using an external processor.
Advance Information
Manufacturing Enhancements
Radio Test Mode
The WL102 radio test mode of operation allows an
attached radio transceiver to be tested more easily in a
complete assembled unit. The mode is selected by
configuring the test mode pins. In this mode the usual
functions of the WL102 are suspended and the control and
status signals of the CCB radio interface are connected to
the pins of the Host interface, with the WL102 providing the
status signals back from the radio interface. The
comparators on the receive data stream are still used and
so the test system is provided with the digital version of this
radio output. In addition the operation of the CCB preamble
and frame word recognition can be tested, as well as the
clock recovery data stream.
Power Control
A power-down function is provided under the control of the
WL102 system. Power down enable signals are provided
to each major block; the clocks of the individual blocks
being disabled when the appropriate power down bit is set.
In addition, the internal processor's PCON register will
disable the 8051 core in the usual manner.
MCB Execute Mode
This mode of operation is used to allow programming of the
external code memory if a re-programmable device is
used, via special software run on the Host. Using this
mode, the WL102's code memory is completely
reprogrammed regardless of its current state i.e. no 'boot-
block' code is required in the WL102 system. This allows
complete radio modules to be manufactured without the
need for preprogramming the code memory. At final test
the MAC software image can be downloaded or test
software can be downloaded and used prior to the final
software.
This facility also allows the complete radio module to be
upgraded in the field or for diagnostic software to be
downloaded as necessary.
System Supply Voltages
The WL102 has two separate digital supply rails, allowing
for use in mixed 3V/5V systems. The host interface has its
own independent supply, whilst a second supply powers
the core of the WL102 and its interface to the memory and
radio transceiver subsystems. Both power supplies may
be operated at either 3 or 5 volts (nominal), with the
restriction that the host interface supply voltage must be
greater than or equal to the voltage powering the WL102
core and radio transceiver.
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MITEL [ MITEL NETWORKS CORPORATION ]
