MB86977 Datasheet, PDF (6/30 Pages) Fujitsu Component Limited. – IP PACKET FORWARDING ENGINE

MB86977
• MII Interface
Pin No.
134
120
72
86
150 to 153
108 to 111
60 to 63
102 to 105
149
107
59
101
142
128
80
94
141
127
79
93
136
122
74
88
132
118
70
84
137 to 140
123 to 126
75 to 78
89 to 92
133
119
71
85
Pin Name
TX_CLK_W
TX_CLK_D
TX_CLK_0
TX_CLK_1
TXD_W [3 : 0]
TXD_D [3 : 0]
TXD_0 [3 : 0]
TXD_1 [3 : 0]
TX_EN_W
TX_EN_D
TX_EN_0
TX_EN_1
RX_CLK_W
RX_CLK_D
RX_CLK_0
RX_CLK_1
RX_ER_W
RX_ER_D
RX_ER_0
RX_ER_1
RX_DV_W
RX_DV_D
RX_DV_0
RX_DV_1
CRS_DV_W
CRS_DV_D
CRS_DV_0
CRS_DV_1
RXD_W [3 : 0]
RXD_D [3 : 0]
RXD_0 [3 : 0]
RXD_1 [3 : 0]
COL_W
COL_D
COL_0
COL_1
• SMI interface
Pin No.
155
162
Pin Name
MDCLK
MDIO
I/O
Description
TX CLOCK
I
This clock from the PHY device provides the timing reference for
transfer of TX_EN and TXD signals.
The frequency is 25 MHz for 100 Mbps, 2.5 MHz for 10 Mbps.
TRANSMIT DATA
O The nibble data is transmitted to PHY devices through this
interface.
TRANSMIT ENABLE
O Active high signal indicates that TX data is valid.
Synchronous with TX_CLK.
RX CLOCK
I
This clock from the PHY device provides the timing reference for
reception.
The frequency is 25 MHz for 100 Mbps, 2.5 MHz for 10 Mbps.
RECEIVE ERROR
Active high signal indicates that an invalid symbol has been
I detected within a received packet.This input is ignored when
RX_DV signal of the same interface is inactive.These pins are
used for both RMII and MII modes.
I
RECEIVE DATA VALID
Active high signal indicates that RXD is valid.
CARRIER SENSE
I
Active high signal indicates that either the transmit or receive
medium is not idle. It is not synchronous to any clock.
These pins are used for both RMII and MII modes.
RECEIVE DATA
I Nibble data from the PHY device.Bits [1:0] are used for both MII
and RMII modes.
COLLISION DETECT
I
Active high signal indicates that collision has been detected in half
duplex mode. It is valid when TX_EN is active. It is not
synchronous to any clock.
I/O
Description
O
MANAGEMENT DATA CLOCK
SMI Clock to PHYs.
I/O
MANAGEMENT DATA INPUT/OUTPUT
SMI Data to/from PHYs.
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