PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 284

• 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 17-10 Data buffer to store IOM timeslot information
Thus the data of one IOM frame are buffered and remain available for 125µs. The
transfer interrupts are generated using the CPU clock signal. To ensure a proper
interrupt generation the CPU frequency must be at least 2.5 MHz. Otherwise the
behavior is unpredictable.
The generation of a transfer interrupt depends on the actual bit value of the enabled
mask register. Therefore the contents of enabled mask registers is copied into temporary
shift register whenever a rising edge on FSC is detected and the remaining contents of
all temporary shift register is ’00
alignment in case of more than one timeslot being transferred. Otherwise in case of
spikes on FSC, the frame structure in memory may be destroyed.
The transfer interrupts are generated for each bit of the temporary shift register. If all bits
for one timeslot are zero, then no transfer interrupt occurs. Depending on the number
and kind of selected mask bits, the transfer interrupts are generated and the logic will
wait until all accesses to the data register have been occurred. Only after all accesses
occurred, the mask bits will be shifted with the next clock cycle.
WR
DU
FIFO
bytes
FIFO
bytes
12
12
ITRDU
bytes
bytes
FIFO
FIFO
12
12
DU
RD
IOM
WR
DD
XBUS
IOM-2 Handler, TIC/CI Handler and HDLC Controller
FIFO
bytes
FIFO
bytes
12
12
H
ITRDD
’. This logic is required to ensure correct memory
bytes
bytes
FIFO
FIFO
12
12
284
DD
RD
Address Generation
Transfer Unit
1. Mask register ITR_MSK1
2. Mask register ITR_MSK2
3. Mask register ITR_MSK3
4. Mask register ITR_MSK4
5. Mask register ITR_MSK5
6. Mask register ITR_MSK6
7. Mask register ITR_MSK7
8. Mask register ITR_MSK8
PSB 21473
2003-03-31
INCA-D