pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 192

• Manufacturer Part Number: pef20320
• Description: Multichannel Network Interface Controller For Hdlc With 32 Channels
• Manufacturer: Infineon Technologies Corporation

User’s Manual
Function
TxShutDown
RcJump
RcShutDown
SwitchlnternalChanLoop
SwitchlnternalCompLoop
ShowMunich32VersionNr
CheckActionRequestQueue Looks for messages to be processed and branches to
Interrupt Entry Point
The information in the interrupt queue is read and a message containing that information
is sent to the user.
In case of a received frame the written receive descriptors are linked to a message and
sent to the user. The next available descriptor in the list is linked to the memory
structures. An equivalent number of new receive descriptors is allocated and linked to
the end of the receive descriptor queue.
In case of a transmit acknowledge interrupt the used transmit descriptors are released
to the descriptor pool.
Action
command or ‘transmit abort’ command, ACTION
REQUEST Pulse is generated.
Initialize Channel Only bit is set, If last command was
‘transmit off’ or ‘transmit abort’ ‘transmit clear’ is given,
‘receive jump’ command is given, ACTION REQUEST
Pulse is generated.
‘Initialize Channel Only’ bit is set, Gives receive off
command if receiver was aborted otherwise gives
receive abort command, ACTION REQUEST Pulse is
generated.
Sets/clears Internal Channelwise Loop, ACTION
REQUEST Pulse is generated.
Sets/clears Complete Loop, ACTION REQUEST Pulse is
generated.
ACTION REQUEST Pulse is generated.
the Message Entry Point.
Initialize Channel Only bit is set, gives ‘transmit off’
192
Application Notes
PEB 20320
01.2000