KS8995MA-EVAL Micrel Inc, KS8995MA-EVAL Datasheet - Page 29
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KS8995MA-EVAL
Manufacturer Part Number
KS8995MA-EVAL
Description
BOARD EVAL EXPERIMENT KS8995MA
Manufacturer
Micrel Inc
Datasheet
1.KS8995MA-EVAL.pdf
(79 pages)
Specifications of KS8995MA-EVAL
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
576-1018
- Current page: 29 of 79
- Download datasheet (619Kb)
Semptember 2008
MII Interface Operation
The media independent interface (MII) is specified by the IEEE 802.3 committee and provides a common interface
betweenphysical layer and MAC layer devices. The KS8995MA/FQ provides two such interfaces. The MII-P5
interface is used to connectto the fifth PHY, whereas the MII-SW interface is used to connect to the fifth MAC. Each
of these MII interfaces contains twodistinct groups of signals, one for transmission and the other for receiving. Table
1 describes the signals used in the MII-P5 interface.
SNI Signal
MRXDV
MRXER
MTXEN
MTXER
MRXD3
MRXD2
MRXD1
MRXD0
MTXD3
MTXD2
MTXD1
MTXD0
MTXC
MCOL
MCRS
MRXC
MDIO
MDC
Table 1. MII – P5 Signals (PHY Mode)
Management data clock
Management data I/O
Transmit data bit 3
Transmit data bit 2
Transmit data bit 1
Transmit data bit 0
Collision detection
Receive data valid
Receive data bit 3
Receive data bit 2
Receive data bit 1
Receive data bit 0
Transmit enable
Transmit clock
Transmit error
Receive clock
Carrier sense
Receive error
Description
29
KS8995MA/FQ Signal
PMTXD[3]
PMTXD[2]
PMTXD[1]
PMTXD[0]
PMRXD[3]
PMRXD[2]
PMRXD[1]
PMRXD[0]
PMRXDV
PMRXER
PMTXEN
PMTXER
PMRXC
PMTXC
PCOL
PCRS
MDIO
MDC
M9999-091508
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