User's Manual

MaxStream 9XStream™ Wireless OEM Module Manual v2.8
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Confidential and Proprietary, ©MaxStream, Inc. 2001
Module Address Mask
(cont.)
Packets with a Transmitter Module Address of FFFFH are received by all
modules (as shown below in Figure 9). A Transmitter Module Address that
matches the Module Address Mask is called a Global Address.
Figure 9 – Demonstration of Module Address comparison at
receiver. FFFFH logically “ANDed” with any Module
Address Mask will equal the Module Address Mask.
Example: Consider Module A with Module Address of 00FFH and
Module Address Mask F0F0H (Figure 10).
Figure 10
Module A can receive packets from other modules in
three ways:
1. From modules with a Transmitter Module Address of
00FFH.
2. By logically “ANDing” a F0F0H Mask with the Receiver
Module Address to receive
0XFX (HEX).
3. From an address that matches the Module Address
Mask of the module (F0F0H), or packets from a module
having a Transmitter Module Address (Global Address)
of
FXFX (since the two 0 values in FOFOH are
insignificant ).