PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 516

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

INCA-D
PSB 21473
USB Module
The UDC will store all the information for each EndPoint. in a separate buffer (40 bit
register called EndPtBufn internally). The number of these buffers depends on the
number of Physical Endpoints.
Physical vs. Logical Endpoints
More than two Physical Endpoints can have the same Logical Endpoint number, which
will be mapped to Physical Endpoints during initialization by setting of Ep_Num.
Each Physical Endpoint might there be associated with a particular Configuration or a
Alternate Setting, but only to one direction (IN or OUT).
Generally, a Logical Endpoint can be bidirectional. However, because only the (logical)
Endpoint number and not the direction is interpreted by the UDC, the endpoints have to
be used for one direction only.
Note: An exeption is Endpoint 0, which is always bidirectional.
The USB commands issued by a host controller refer to Logical Endpoints.
22.2
USB Configurations
The implemented USB module supports communication pipes to 16 physical endpoints.
The supported 15 interfaces can be used in the described four configurations(0-3).
Note: The USB specification v1.1 supports 1 configuration in addition to CONFIG0 only.
(CONFIG0 and CONFIG1).
As the UDC interprets the Endpoint number only and not the direction of a specific
Endpoint, the usage of the same logical Endpoint for IN and OUT transfers should be
avoided.
The following abbreviations are used:
• IFC: Interface Configuration
• EP: Endpoint
• AS: Alternate Setting
Config 0
EP 0
Figure 22-2 USB Configuration 0 with Control Endpoint 0
Data Sheet
516
2003-03-31