mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 262

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

The USB cables contain four wires, two for data and two for power. The USB full-speed bit
rate is 12 Mbps. A limited-capability, low-speed mode is also defined at 1.5 Mbps.
The MCF5272 includes the following features:
Introduction
12-2
• Supports full-speed 12-Mbps USB devices and low-speed 1.5-Mbps devices
• Full compliance with the Universal Serial Bus Specification, Revision 1.1
• Automatic processing of USB standard device requests:
• Supports either internal or external USB transceiver
• Programmable 512-byte receive and 512-byte transmit FIFO buffers
• USB device controller with protocol control and administration for up to eight
• Programmable endpoint types with support for up to eight control, interrupt, bulk,
• Independent interrupts for each endpoint
• Supports remote wakeup
GET
SET
endpoints, 16 interfaces, and 16 configurations
or isochronous endpoints
Peripheral
_
_
ADDRESS
CONFIGURATION
Peripheral
B
Figure 12-1. The USB “tiered star” topology.
,
SET
_
B
CONFIGURATION
A
,
GET
A
_
DESCRIPTOR
MCF5272 User’s Manual
Hub
A
B
A
,
SET
A
B
B
,
_
GET
A
FEATURE
Hub
_
B
INTERFACE
Peripheral
, and
A
CLEAR
SET
,
GET
_
INTERFACE
B
_
_
STATUS
FEATURE
,
MOTOROLA
,