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IP178C
Preliminary Data Sheet
32/91
October 27, 2005
Copyright © 2004, IC Plus Corp.
IP178C-DS-R09
2.3
Port locking
IP178C supports port locking. Each port can be configured individually by programming MII register
30.31[8:0] or EEPROM 63[0] and 62[7:0]. User has to reset IP178C by writing 16’h55AA to MII register
30.0 after enabling this function. IP178C locks first MAC address if the function is enabled. Any packet
with MAC address not equal to the locked one will be dropped.
User has to turn off aging function when using the port locking function. Aging function can be disabled
by pulling low pin 76 AGING or programming register 30.1[3:2].
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