pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 191

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

5.2.3.1 Device Driver Module MUNICH32
Tasks
The MUNICH32 Device Driver Module has to prepare all memory structures for the
MUNICH32. The ACTION REQUEST Pulse has to be generated. The device driver
module also has to treat the MUNICH32 interrupts.
Message Entry Point
Every incoming message results in executing a function.
Function
ResetMunich32
ConfigMunich32
InitlnterruptQueue
InitChannel
InitTxChannel
InitRcChannel
SendFrame
TxJump
TxHold
User’s Manual
Action
Action Specification Reset bit is set, All channels are
initialized, all time-slots are initialized, ACTION
REQUEST Pulse is generated.
Sets PCM mode and maximum frame length, ACTION
REQUEST Pulse is generated.
Interrupt Attention bit is set, A new interrupt queue is
defined, ACTION REQUEST Pulse is generated.
Action Specification in-bit is set, Initializes receiver and
transmitter of selected channel, ACTION REQUEST
Pulse is generated.
Initializes transmitter of selected channel, ACTION
REQUEST Pulse is generated.
Initializes receiver of selected channel, ACTION
REQUEST Pulse is generated.
Adds tx descriptors to the transmit descriptor queue and
clears hoId bit of poll descriptor if the channel is active.
If no poll descriptor is detected Initialize Channel Only bit
is set, ‘transmit jump’ command is given, if the previous
command was not ‘receive abort’ or ‘off the receive clear’
command is given, ACTION REQUEST Pulse is
generated.
Initialize Channel Only bit is set, turns channel on or off,
turn channel on: if last command was ‘transmit off’ or
‘transmit abort’ ‘transmit clear’ is given and ‘transmit hold’
bit is cleared, turn channel off: if channel is active and
‘transmit hold’ bit is set, ACTION REQUEST Pulse is
generated.
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Application Notes
PEB 20320
01.2000