PEB 2091
PEF 2091
Functional Description
Table 8
Setting EOC Mode
Mode Selection
Stand-Alone Mode / µP Mode
EOC Mode
Transparent
Automatic
Pin AUTO/Bit STCR:AUTO
0
1
function transfers the Monitor Channel into the idle state thereby resolving possible
lock-up situations. It therefore is to be used in all systems where no µP is capable of
detecting and solving hang-up situations in the monitor procedure. For a detailed
description of the time-out procedure see "Monitor Procedure Time-Out", page 80.
Note 4: The Monitor Channel Time-Out feature is only available after the
complete receive frame structure has been detected on U (see Figure 30,
page 81). I.e. this feature is available if the following signals have been
received:
In LT modes, the signals SN3 or SN3T
In NT modes, the signals SL2, SL3, SL3T
See "U-Interface Signals", page 125 for definition of these signals.
In stand-alone mode the MTO mode will be set by the input pin MTO. In µP mode the
MTO mode will be set by bit MTO of register ADF2 (see "ADF2-Register", page 214).
Table 9
Setting MTO Mode
Mode Selection
Stand-Alone Mode / µP Mode
MTO Mode
Pin MTO/Bit ADF2:MTO
Time-out Enabled
Time-out Disabled
01)
1
1) In stand-alone mode the pin MTO can be left unconnected. Due to an internal pull-down the
Monitor Channel time-out feature will be enabled.
3.2.7
Setting IOM®-2 Bit Clock Mode
Note 5: This section applies only if the microprocessor mode and the IOM®-2
Master mode are used (see Note 8, page 70 for definition).
The default frequency of the IOM®-2 clock DCL will always be two times the bit frequency
(see Note 7, page 70). In some non standard applications it might be more convenient
to have IOM®-2 bit rate on DCL, instead. The IEC-Q supports this in the microprocessor
mode. In this mode it is possible to change the DCL frequency if the IOM®-2 master
Semiconductor Group
56
Data Sheet 01.99
INFINEON [ Infineon ]
