IP178C/IP178C LF/IP178CH/IP178CH LF
Datasheet
26/93
June 21, 2007
Copyright © 2004, IC Plus Corp.
IP178Cx-DS-R12
Pin description (continued)
Pin no.
Label
Type
Description
MII interface/ MAC mode
(Pin 53 EXTMII_EN =1, pin104 MII_MAC=1 and Pin72 RMII_MII =0)
101
TXCLK
IPL2
MII transmit clock
It is an input signal when MII works at MAC mode. It should be
connected to MII RXCLK of an external PHY.
87,86,85
,81
TXD0~TXD3
IPL1
IPL1
IPL1
IPH2
MII transmit data
They are input signals when MII works at MAC mode. They are
sampled at the rising edge of TXCLK. They should be connected
to MII RXD of an external PHY.
80
TXEN
IPH2
MII transmit enable
It is an input signal when MII works at MAC mode. It is used to
frame TXD [3:0]. It is sampled at the rising edge of TXCLK. It
should be connected to MII RXDV of an external PHY.
75
RXDV
IPH1/
O
MII receive data valid
It is an output signal when MII works at MAC mode. It is used to
frame RXD [3:0]. It is sent out at the falling edge of RXCLK. It
should be connected to MII TXEN of an external PHY.
79, 78,
77, 76
RXD0~RXD4
IPL1/
O,
IPL1/
O,
IPL1/
O,
IPH1/
O
MII receive data
They are output signals when MII works at MAC mode. They are
sent out at the falling edge of RXCLK. They should be
connected to MII TXD of an external PHY.
56
RXCLK
IPH2
MII receive clock
It is an input signal when MII works at MAC mode. It should be
connected to MII TXCLK of an external PHY.
This pin should be left open when MII/RMII is disabled.
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