psf2115 ETC-unknow, psf2115 Datasheet - Page 165
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psf2115
Manufacturer Part Number
psf2115
Description
Isdn Adapter Circuit Ipac
Manufacturer
ETC-unknow
Datasheet
1.PSF2115.pdf
(317 pages)
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Semiconductor Group
3.3.1
The B-Channel related interrupt sources can be logically grouped into
– receive interrupts,
– transmit interrupts and
– special condition interrupts.
Each interrupt indication of the ISTAB registers can be selectively masked by setting the
respective bit in the MASKB registers.
The following tables give a complete overview of the individual interrupt indications and
the cause of their activation as well as specific restrictions (marked with ‘*’
Table 22 Receive Interrupts
RPF
RME
RFO
RFS
Receive Pool Full
(ISTAB)
Receive Message End
(ISTAB)
Receive Frame Overflow
(EXIRB)
Receive Frame Start
(EXIRB)
B-Channel Interrupts
Activated as soon as 64-bytes are stored in the
RFIFOB but the message is not yet completed.
Activated if either one message up to 64 bytes or
the last part of a message with more than 64 bytes
is stored in the RFIFOB, i.e. after the reception of
the CRC and closing flag sequence.
Activated if a complete frame could not be stored
due to occupied RFIFOB, i.e. the RFIFOB is full
and the IPAC has detected the start of a new
frame.
*Only activated if enabled by setting the RIE bit in
CCR2 register.
Activated after the start of a valid frame has been
detected, i.e. after a valid address check in
operation modes providing address recognition,
otherwise after the opening flag (transparent mode
0), delayed by two bytes.
After an RFS interrupt, the contents of
– RHCRB
– RAL1
– RSTAB – bit 3-0
are valid and can be read by the CPU.
165
Operational Description
).
PSB 2115
PSF 2115
11.97
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