mcf5274l Freescale Semiconductor, Inc, mcf5274l Datasheet - Page 11

• Manufacturer Part Number: mcf5274l
• Description: Mcf5275 Integrated Microprocessor Family Hardware
• Manufacturer: Freescale Semiconductor, Inc

3.8
The USB controller supports device mode data communications with a USB host (typically a PC).
The programmable USB registers allow the user to enable or disable the module, control characteristics of
individual endpoints, and monitor traffic flow through the module without ever seeing the low-level details
of the USB protocol.
The USB module provides the following features to the user:
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Support for full-duplex operation (200Mbps throughput) with a minimum system clock of
50MHz
Support for half-duplex operation (100Mbps throughput) with a minimum system clock rate of
25MHz
IEEE 802.3 full duplex flow control
Programmable max frame length supports IEEE 802.1 VLAN tags and priority
Retransmission from transmit FIFO following a collision (no system bus utilization)
Automatic internal flushing of the receive FIFO for runts (collision fragments) and address
recognition rejects (no system bus utilization)
Address recognition
— Frames with broadcast address may be always accepted or always rejected
— Exact match for single 48-bit individual (unicast) address
— Hash (64-bit hash) check of individual (unicast) addresses
— Hash (64-bit hash) check of group (multicast) addresses
— Promiscuous mode
RMON and IEEE statistics
Interrupts for network activity and error conditions
Supports full-speed 12-Mbps USB devices and low-speed 1.5-Mbps devices
Full compliance with the Universal Serial Bus Specification, Revision 2.0
Automatic hardware processing of USB standard device requests
USB device controller with protocol control and administration for up to eight endpoints, 16
interfaces, and 16 configurations. Endpoint types are programmable with support for up to eight
control, interrupt, bulk, or isochronous endpoints
Independent interrupts for each endpoint
Supports remote wakeup via a register bit
Detects start-of-frame and missed start-of-frame for isochronous endpoint synchronization
Notification of start-of-frame, reset, suspend, and resume events
Universal Serial Bus (USB)
MCF5275 Integrated Microprocessor Family Hardware Specification, Rev. 1.1
Preliminary
Features
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