PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 530

• 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
Another way to initiate buffer switching is setting bit DONE by software. This feature,
which is shown in figure 22-15 for USB read access, can be used to transfer a variable
number of bytes. The maximum number of bytes to be transferred is still determined by
MaxLen, which is not changed when bit DONE is set. The actual packet length (Len1 or
Len2) is the number of bytes which have been written to the buffer before bit DONE is
set.
Figure 22-15 Dual Buffer Mode USB Read Access : Buffer Switching by Setting Bit
MaxLen
Len1
Len2
MaxLen
Len1
Len2
USB read accesses
Data Bytes
Number of
UBF
CBF
= 0
= 0
SOF (n)
set
DONE
1
Page 0
Frame n
Page 1
Swap
Buffer
DONE = 1
UBF = 1
2
SOF (n+1)
CPU write accesses
530
set
Page 1
UBF = 0
Frame n+1
Page 0
Swap
Buffer
DONE = 1
UBF = 1
3
SOF (n+2)
USB Module
set
PSB 21473
Page 0
Page 1
2003-03-31
MCT03408
INCA-D
Time
Time