PSB3186FV14XP Lantiq, PSB3186FV14XP Datasheet - Page 89
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PSB3186FV14XP
Manufacturer Part Number
PSB3186FV14XP
Description
Manufacturer
Lantiq
Datasheet
1.PSB3186FV14XP.pdf
(200 pages)
Specifications of PSB3186FV14XP
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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• Since a double last-look criterion is implemented the receiver is able to receive the
• To control this handshake procedure a collision detection mechanism is implemented
• Monitor data will be transmitted repeatedly until its reception is acknowledged or the
• Two frames with the MX bit in the inactive state indicates the end of a message
• Transmission and reception of monitor messages can be performed simultaneously.
3.7.3.2
In case the ISAC-SX TE does not detect identical monitor messages in two successive
frames, transmission is not aborted. Instead the ISAC-SX TE will wait until two identical
bytes are received in succession.
A transmission is aborted of the ISAC-SX TE if
• an error in the MR handshaking occurs
• a collision on the IOM-2 bus of the MONITOR data or MX bit occurs
• the transmission time-out timer expires
A reception is aborted by the device if
• an error in the MX handshaking occurs or
• an abort request from the opposite device occurs
MX/MR Treatment in Error Case
In the master mode the MX/MR bits are under control of the microcontroller through MXC
or MRC, respectively. An abort is indicated by an MAB interrupt or MER interrupt,
respectively.
In the slave mode the MX/MR bits are under control of the device. An abort is always
indicated by setting the MX/MR bit inactive for two or more IOM-2 frames. The controller
must react with EOM.
Figure 49
an example for an abort requested by the transmitter and
for a successful transmission.
Data Sheet
MON slot data at least twice (in two consecutive frames), the receiver waits for the
acknowledge of the reception of two identical bytes in two successive frames.
in the transmitter. This is done by making a collision check per bit on the transmitted
MONITOR data and the MX bit.
transmission time-out timer expires.
(EOM).
This feature is used by the ISAC-SX TE to send back the response before the
transmission from the controller is completed (the ISAC-SX TE does not wait for EOM
from controller).
shows an example for an abort requested by the receiver,
Error Treatment
89
Description of Functional Blocks
Figure 51
shows an example
Figure 50
ISAC-SX TE
PSB 3186
2003-01-30
shows
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