ip178a ETC-unknow, ip178a Datasheet - Page 25

• Manufacturer Part Number: ip178a
• Description: 8-port 10/100 Ethernet Integrated Switch
• Manufacturer: ETC-unknow

MII
IP178A supports one MII. When the interface is active
(MII_P0_EXT_EN=1), the Phyceiver of port0 is disabled
and the switch core interfaces the MII directly. This make
IP178A can behave like a Fast Ethernet Phyceiver on
port 0.
Preliminary, Specification
IP178A-DS-P05
Sep. 09, 2002
PHYceiver
PHYceiver
Port1
Port2
Switch engine
subject to change without notice
PHYceiver
Port3
IP178A works at 7TP + 1 MII mode
PHYceiver
Port4
MII_TXCLK
MII_RXDV
MII_TXEN
MII_RXD
MII_TXD
PHYceiver
25
Port5
The major difference between the MII and IEEE standard
MII are clock and RXER signals. There is only one clock
and there is no RXER signal on the interface. For half
duplex operation, MCOL is used as a collision during
transmission. The following diagram illustrates the MII of
IP178A.
PHYceiver
Port6
PHYceiver
(Disabled)
Port 0
PHYceiver
Port7
MTXEN
MTXD
MRXDV
MRXD
MCOL
MII_CLK
(Advance Version)
IP178A