Motorola MCF5281 Queued Serial Peripheral Interface Qspi Signals, FlexCAN Signals, 2C Signals

Overview

Table 14-1. MCF5282 Signal Description (Continued)

Signal Name	Abbreviation		Function	I/O	Page
Receive data valid	ERXDV		Asserted to indicate that the PHY has	I	14-24
			valid nibbles present on the MII.
Receive data 0	ERXD0		Ethernet input data transferred from	I	14-24
			the PHY to the media access
			controller (when ERXDV is asserted).
Carrier receive sense	ECRS		Asserted to indicate that the transmit	I	14-24
			or receive medium is not idle.
Transmit data	ETXD[3:1]		Contain the serial output Ethernet	O	14-24
			data.
Transmit error	ETXER		Asserted (for one or more E_TXCLKs	O	14-24
			while ETXEN is also asserted) to
			cause the PHY to send one or more
			illegal symbols.
Receive data	ERXD[3:1]		Contain the Ethernet input data	I	14-25
			transferred from the PHY to the media
			access controller (when ERXDV is
			asserted in MII mode).
Receive error	ERXER		Indicates (when asserted with	I	14-25
			ERXDV) that the PHY has detected
			an error in the current frame.
	Queued Serial Peripheral Interface (QSPI) Signals
QSPI synchronous	QSPI_DOUT		Provides serial data from the QSPI.	O	14-25
serial data output
QSPI synchronous	QSPI_DIN		Provides serial data to the QSPI.	I	14-25
serial data input
QSPI serial clock	QSPI_CLK		Provides the serial clock from the	O	14-25
			QSPI.
QSPI chip selects	QSPI_CS[3:0]		Provide QSPI peripheral chip selects.	O	14-25
		FlexCAN Signals
FlexCAN transmit	CANTX		Controller area network transmit data.	O	14-26
FlexCAN transmit	CANRX		Controller area network transmit data.	I	14-26
			I2C Signals
Serial clock	SCL		Clock signal for the I2C interface.	I/O	14-26
Serial data	SDA		Data input/output for the I2C interface.	I/O	14-26
		UART Signals
Transmit serial	UTXD[2:0]		Transmitter serial data outputs.	O	14-26
data output
Receive serial	URXD[2:0]		Receiver serial data inputs.	I	14-27
data input

MOTOROLA Chapter 14. Signal Descriptions 14-5