PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 522

• 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

Data Sheet
Figure 22-7 USB Write Access in Single Buffer Mode - Buffer Handling
Figure 22-8 shows more details of an USB write access to USB memory in single buffer
mode. After SOF(n) (start of frame) occured at
number of bytes into the USB memory. A byte counter is incremented after every USB
memory write operation. When the USB memory write operation (Len(n)) is finished
correctly, bit SOD (start of data) is set at
Furthermore, the byte counter value is stored in the corresponding length register,
indicating the number of bytes which have been transferred and can be now read by the
CPU. Subsequently, the CPU can read data bytes from USB memory, generating an
EOD (end of data) at
empty USB buffer, which now can be written again by the USB.
4
EOD = 1
after the last byte has been read. Bit EOD set indicates an
Yes
Buffer can be read by CPU
USB write access disabled
USB write access enabled
CPU read access disabled
CPU read access enabled
Buffer is written by USB
522
Buffer is empty:
Buffer empty?
Buffer is full:
Yes
Yes
Buffer full?
USB write
request?
SOD = 1
3
, indicating a full USB memory buffer.
1
, the USB starts writing at
MCD03400
No
No
No
USB Module
PSB 21473
2003-03-31
2
INCA-D
a fixed