Freescale Semiconductor MCF5480 - Manual (Page 96)

MCF548x Reference Manual, Rev. 3
2-26 Freescale Semiconductor
2.2.7.12 Transmit Error (E0TXER, E1TXER)
When the ETXER output is asserted for one or more clock cycles while ETXEN is also asserted, the PHY
sends one or more illegal symbols. ETXER has no effect at 10 Mbps or when ETXEN is negated, and
applies to MII mode operation.
2.2.7.13 Receive Data 1–3 (E0RXD[3:1], E1RXD[3:1])
These pins contain the Ethernet input data transferred from the PHY to the media-access controller when
ERXDV is asserted in MII mode operation.
2.2.7.14 Receive Error (E0RXER, E1RXER)
ERXER is an input signal that, when asserted along with ERXDV, signals that the PHY has detected an
error in the current frame. When ERXDV is not asserted, ERXER has no effect and applies to MII mode
operation.
2.2.8 Universal Serial Bus (USB)
2.2.8.1 USB Differential Data (USBD+, USBD–)
USBD+ and USBD– are the outputs of the on-chip USB 2.0 transceiver. They provide differential data for
the USB 2.0 bus.
2.2.8.2 USBVBUS
This is the USB cable Vbus monitor input.
2.2.8.3 USBRBIAS
This is the connection for external current setting resistor. It should be connected to a 9.1k Ω +/– 1%
pull-down resistor.
For the MCF5481 and MCF5480 devices this pin should be connected to a 9.1k
Ω +/– 20% pull-down
resistor.
2.2.8.4 USBCLKIN
This is the input pin for 12-MHz USB crystal circuit.
2.2.8.5 USBCLKOUT
This is the output pin for 12-MHz USB crystal circuit.
2.2.9 DMA Serial Peripheral Interface (DSPI) Signals
2.2.9.1 DSPI Synchronous Serial Data Output (DSPISOUT)
The DSPISOUT output provides the serial data from the DSPI and can be programmed to be driven on the
rising or falling edge of DSPISCK.