IP178C
Preliminary Data Sheet
21/91
October 27, 2005
Copyright © 2004, IC Plus Corp.
IP178C-DS-R09
Pin description (continued)
Pin no.
Label
Type
Description
Advance operation parameter setting of switch engine
77
BCSTF
IPL1
Broadcast frame option
1: Packets with DA equal to FFFFFFFF are handld as broadcast
frame in broadcast protection function,
0: Packets with DA equal to FFFFFFFF or multi-cast frames are
handld as broadcast frame in broadcast protection function.
The function is valid only if pin 53 EXTMII_EN is pulled low.
Programming MII register 31.30.12 will overwrite the setting.
78
FILTER_DA
IPL1
Reserved address forward option
Filter packets with specific DA from 01-80-c2-00-00-02 to
01-80-c2-00-00-0f.
Packets
with
specific
DA
equal
to
01-80-c2-00-00-01 are always filtered regardless the setting of
this pin.
1: filter, 0: forward (defaut)
The function is valid only if pin 53 EXTMII_EN is pulled low.
101
LONG_PKT_DIS
IPH2
Max packet size option
1: Drop packets with length longer than 1536 bytes
0: Drop packets with length longer than 1552 bytes
TP setting
90
MDI_MDIX_EN
IPH1
/O
MDI/MDI-X enable
MDI/MDI-X auto cross over
1: enable (default), 0:disable
It is an input signal during reset and its value is latched at the
end of reset to set auto MDI/MDIX function. It is link LED of port
6 after reset.
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