25 / 111 page
IP175C/IP175C LF/IP175CH/IP175CH LF
Data Sheet
25/111
Mar 09, 2007
Copyright © 2004, IC Plus Corp.
IP175C/IP175CH-DS-R14
Pin description (continued)
Pin No.
Label
Type
Description
External RMII1 interface (RMII_EN=1, MII1_DIS=0, MII1_PHY_MOD=0, P4EXT=1)
67, 66
RXD1_0, RXD1_1
I
RMII receive data
It
is
connected
to
RMII_RXD[1:0]
of
external
PHY
or
RMII_TXD[1:0] of external MAC.
63
RXDV1
I
RMII receive data valid
It is connected to RMII_RXDV of external PHY or RMII_TXEN of
external MAC.
61, 60
TXD1_0, TXD1_1
O
RMII transmit data
It
is
connected
to
RMII_RXD[1:0]
of
external
MAC
or
RMII_TXD[1:0] of external PHY.
57
TXEN1
O
RMII transmit enable
It is connected to RMII_RXDV of external MAC or RMII_TXEN of
external PHY.
58
RMII1_MAC_CLK
_OUT
O
A 50Mhz reference clock output for other RMII devices
68
RMII1_MAC_CLK
_IN
I
50Mhz RMII reference clock input
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