25 / 91 page
IP178C
Preliminary Data Sheet
25/91
October 27, 2005
Copyright © 2004, IC Plus Corp.
IP178C-DS-R09
Pin description (continued)
Pin no.
Label
Type
Description
RMII interface
(Pin 53 EXTMII_EN =1, pin104 MII_MAC=0 and Pin72 RMII_MII =1)
76
RMII_CLK_OUT
O
RMII reference clock source
56
RMII_CLK_IN
IPH2
RMII reference clock input
87,86
TXD0, TXD1
IPL1
RMII transmit data
It is sampled at the rising edge of RMII_CLK_IN.
80
TXEN
IPH2
RMII transmit enable
It is used to frame TXD [1:0]. It is sampled at the rising edge of
RMII_CLK_IN.
75
RXDV
IPH1/
O
RMII receive data valid
It is used to frame RXD [1:0]. It is sent out at the rising edge of
RMII_CLK_IN.
79, 78
RXD0, RXD1
IPL1/
O
RMII receive data
It is sent out at the rising edge of RMII_CLK_IN.
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