MSC8122(2006) Просмотр технического описания (PDF) - Freescale Semiconductor
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MSC8122 Datasheet PDF : 88 Pages
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Direct Slave Interface, System Bus, Ethernet, and Interrupt Signals
Table 1-5. DSI, System Bus, Ethernet, and Interrupt Signals (Continued)
Signal Name
HD[32–39]
Type
Input/ Output Host Data Bus 32–39
Bits 32–39 of the DSI data bus.
Description
D[32–39]
Input/ Output System Bus Data 32–39
For write transactions, the bus master drives valid data on this bus. For read transactions, the slave drives
valid data on this bus.
Reserved
HD40
Input
If the Ethernet port is enabled and multiplexed with the DSI/System bus, these pins are reserved and can
be left unconnected.
Input/ Output Host Data Bus 40
Bit 40 of the DSI data bus.
D40
Input/ Output System Bus Data 40
For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives
valid data on this bus.
ETHRXD0
HD41
Input
Ethernet Receive Data 0
In MII and RMII modes, bit 0 of the Ethernet receive data.
Input/ Output Host Data Bus 41
Bit 41 of the DSI data bus.
D41
Input/ Output System Bus Data 41
For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives
valid data on this bus.
ETHRXD1
HD42
Input
Ethernet Receive Data 1
In MII and RMII modes, bit 1 of the Ethernet receive data.
Input/ Output Host Data Bus 42
Bit 42 of the DSI data bus.
D42
Input/ Output System Bus Data 42
For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives
valid data on this bus.
ETHRXD2
Input
Ethernet Receive Data 2
In MII mode only, bit 2 of the Ethernet receive data.
Reserved
HD43
Input
In RMII mode, this pin is reserved and can be left unconnected.
Input/ Output Host Data Bus 43
Bit 43 of the DSI data bus.
D43
Input/ Output System Bus Data 43
For write transactions, the bus master drives valid data on this line. For read transactions, the slave drives
valid data on this bus.
ETHRXD3
Input
Ethernet Receive Data 3
In MII mode only, bit 3 of the Ethernet receive data.
Reserved
HD[44–45]
Input
In RMII mode, this pin is reserved and can be left unconnected.
Input/ Output Host Data Bus 44–45
Bits 44–45 of the DSI data bus.
D[44–56]
Input/ Output System Bus Data 44–45
For write transactions, the bus master drives valid data on this bus. For read transactions, the slave drives
valid data on this bus.
Reserved
Input
If the Ethernet port is enabled and multiplexed with the DSI/System bus, these pins are reserved and can
be left unconnected.
MSC8122 Technical Data, Rev. 13
Freescale Semiconductor
1-5
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