7 / 36 page
IP101A LF
Data Sheet
7/36
Oct 22, 2007
Copyright © 2004, IC Plus Corp.
IP101A LF-DS-R12
Pin Descriptions (continued)
Pin no.
Label
Type
Description
MII and PCS Interface – Media Independent Interface (MII) Pins
24
RX_ER
O
(PD)
Receive error:
This pin outputs a high status when errors
occurred in the decoded data in the reception.
(Notice: This pin is pulled down internally. An external 5.1KΩ
pull down resistor is needed to avoid the noise interference.)
1
COL/RMII
O/LI
(PD)
Collision Detected:
When this pin outputs a high status signal it
means collision is detected.
RMII Mode:
During power on reset, this pin status is latched and
arranged with MII/SNIB (pin44) to determine MAC interface
RMII MII/SNIB
1
X
RMII Interface
0
1
MII Interface
0
0
SNI Interface
(Notice: This pin is pulled down internally)
23
CRS/LEDMOD
O
(PD)
Carrier Sense:
When signal output from this pin is high
indicates the transmission or reception is in process and at low
status means the line is in idle state.
LEDMOD:
During power on reset, this pin status is latched to
determine at which LED mode to operate, please refer to the
LED pins description.
(Notice: This pin is pulled down internally)
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