PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 577

• 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

DBMn
1)
22.12.5
The bits of the endpoint buffer status registers indicate the status of the endpoint specific
USB memory buffers and allows setting of certain USB memory buffer conditions.
An EPBS register is available for each of the 16 endpoints (n=0-15).
Reset value: 20
1)
UBFn
CBFn
DIRn
Data Sheet
This means that the auto-swap function is limited to the last accessed endpoint buffer
This bit is only defined for endpoint 0, ie. for register EPBS0
Bit
UBFn
7
r
Endpoint Buffer Status Register (EPBSn)
Dual Buffer Mode
Bit DBM allows the selection between single buffer mode and dual buffer
mode.
If DBM=0, single buffer mode is selected
If DBM=1, dual buffer mode is selected
USB Buffer Full
Bit UBFn indicates the status of the USB memory buffer for endpoint n.
USB read access: If UBFn=0, the USB buffer for endpoint n is empty.
USB write access: If UBFn=0, the USB buffer for endpoint n is not full.
CPU Buffer Full
Bit CBFn indicates the status of the CPU memory buffer for endpoint n.
CPU read access: If CBFn=0, the CPU buffer for endpoint n is empty.
CPU write access: If CBFn=0, the CPU buffer for endpoint n is not full.
Direction of USB Memory Access
Bit DIRn indicates the direction of the last USB memory access for
endpoint n.
If DIRn=0, the last data flow for endpoint n was from host to CPU
If DIRn=1, the last data flow for endpoint n was from CPU to host
H
CBFn
6
r
DIRn
5
r
If UBFn=1, the USB buffer for endpoint n is not
empty.
If UBFn=1, the USB buffer for endpoint n is full.
If CBFn=1, the CPU buffer for endpoint n is not
empty.
If CBFn=1, the CPU buffer for endpoint n is full.
ESP0
w
4
577
1)
Function
SETRDn SETWRn CLREPn DONEn
w
3
w
2
w
1
USB Module
PSB 21473
2003-03-31
INCA-D
w
0