Motorola ColdFire MCF5281 - Manual (Page 249)

Signal Descriptions
Freescale Semiconductor 14-9
EMDC Provides a timing reference to the PHY for data transfers on the
EMDIO signal.
Note: Not available on MCF5214 and MCF5216 O
EMDIO Transfers control information between the external PHY and the
media access controller.
Note: Not available on MCF5214 and MCF5216 I/O
ERXCLK Provides a timing reference for ERXDV, ERXD[3:0], and
ERXER.
Note: Not available on MCF5214 and MCF5216 I
ERXD[3:1] Contain the Ethernet input data transferred from the PHY to the
media access controller (when ERXDV is asserted in MII mode).
Note: Not available on MCF5214 and MCF5216 I
ERXD0 Ethernet input data transferred from the PHY to the media
access controller (when ERXDV is asserted).
Note: Not available on MCF5214 and MCF5216 I
ERXDV Asserted to indicate that the PHY has valid nibbles present on
the MII.
Note: Not available on MCF5214 and MCF5216 I
ERXER Indicates (when asserted with ERXDV) that the PHY has
detected an error in the current frame.
Note: Not available on MCF5214 and MCF5216 I
ETXCLK Provides a timing reference for ETXEN, ETXD[3:0], and ETXER.
Note: Not available on MCF5214 and MCF5216 I
ETXD[3:1] Contain the serial output Ethernet data.
Note: Not available on MCF5214 and MCF5216 O
ETXD0 Serial output Ethernet data.
Note: Not available on MCF5214 and MCF5216 O
ETXEN Indicates when valid nibbles are present on the MII.
Note: Not available on MCF5214 and MCF5216 O
ETXER Asserted (for one or more E_TXCLKs while ETXEN is also
asserted) to cause the PHY to send one or more illegal symbols.
Note: Not available on MCF5214 and MCF5216 O
EXTAL Driven by an external clock except when used as a connection
to the external crystal. I
VDDF, VSSF Supply power and ground to Flash array. I
VPP Used for Flash stress testing. I
GPTA[3:0] Provide the external interface to the timer A functions. I/O
GPTB[3:0] Provide the external interface to the timer B functions. I/O
Ground Negative supply.
IRQ[7:1] External interrupt sources. I
Table 14-2. MCF5282 Alphabetical Signal Index (continued)
Abbreviation Function I/O
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3