PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 69
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PSB2186N-V11TR
Manufacturer Part Number
PSB2186N-V11TR
Description
IC ISDN SUBSCRIB ACCESS 44-PLCC
Manufacturer
Infineon Technologies
Datasheet
1.PSB2186N-V11TR.pdf
(240 pages)
Specifications of PSB2186N-V11TR
Controller Type
Subscriber Access Controller (ISDN)
Interface
4-Wire SPI Serial
Voltage - Supply
4.75 V ~ 5.25 V
Current - Supply
17mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Other names
PSB2186N-V11INTR
PSB2186N-V11TR
PSB2186N-V11TR
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When 32 bytes of a message longer than that are stored in the RFIFO, the CPU is prompted
to read out the data by an RPF interrupt. The CPU must handle this interrupt before more than
32 additional bytes are received, which would cause a "data overflow".This corresponds to a
maximum CPU reaction time of 16 ms (data rate 16 kbit/s).
After a remaining block of less than or equal to 16 bytes has been stored, it is possible to store
the first 16 bytes of a new message (see figure 33).
The internal memory is now full. The arrival of additional bytes will result in "data overflow"
(RSTA:RDO) and a third new message in "frame overflow" (EXIR:RFO).
The generated interrupts are inserted together with all additional information into a queue to
be individually passed to the CPU.
After an RPF or RME interrupt has been processed, i.e. the received data has been read from
the RFIFO, this must be explicitly acknowledged by the CPU issuing an RMC (Receive
Message Complete) command.
The ISAC-S TE can then release the associated FIFO pool for new data. If there is an
additional interrupt in the queue it will be generated after the RMC acknowledgement.
Figure 33
Contents of the RFIFO (long messages)
Semiconductor Group
31
31
0
0
the Queue
Long
Message
RFIFO
Interrupts in
RPF
RPF
69
15
16
31
31
0
0
Long
Message
< (
Message 2
< (
_
_
46
32
RFIFO
bytes)
bytes)
Functional Description
1
Interrupts in
the Queue
ITS01501
RPF
RME
RME
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