MNSC140CORE datasheet(17/88 Pages) FREESCALE

17 / 88 page

Direct Slave Interface, System Bus, Ethernet, and Interrupt Signals

MSC8122 Technical Data, Rev. 13

Freescale Semiconductor

1-7

HD55

D55

ETHTX_ER

Reserved

Input/ Output

Output

Input

Host Data Bus 55

Bit 55 of the DSI data bus.

System Bus Data 55

For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives

valid data on this bus.

Ethernet Transmit Data Error

In MII mode only, indicates a transmit data error.

In RMII mode, this pin is reserved and can be left unconnected.

HD56

D56

ETHRX_DV

ETHCRS_DV

Input/ Output

Input

Host Data Bus 56

Bit 56 of the DSI data bus.

System Bus Data 56

For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives

valid data on this bus.

Ethernet Receive Data Valid

Indicates that the receive data is valid.

Ethernet Carrier Sense/Receive Data Valid

In RMII mode, indicates that a carrier is detected and after the connection is established that the receive

data is valid.

HD57

D57

ETHRX_ER

Input/ Output

Input

Host Data Bus 57

Bit 57 of the DSI data bus.

System Bus Data 57

For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives

valid data on this bus.

Ethernet Receive Data Error

In MII and RMII modes, indicates a receive data error.

HD58

D58

ETHMDC

Input/ Output

Output

Host Data Bus 58

Bit 58 of the DSI data bus.

System Bus Data 58

For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives

valid data on this bus.

Ethernet Management Clock

In MII and RMII modes, used for the MDIO reference clock.

HD59

D59

ETHMDIO

Input/ Output

Host Data Bus 59

Bit 59 of the DSI data bus.

System Bus Data 59

For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives

valid data on this bus.

Ethernet Management Data

In MII and RMII modes, used for station management data input/output.

Table 1-5.

DSI, System Bus, Ethernet, and Interrupt Signals (Continued)

Signal Name

Type

Description

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