pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 157

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

4. Before changing the MODE, CRC, CS, TRV, INV, TFLAG bits or TTI or time slot
5. To revive a channel after it has been shut down one should use the transmit
6. For V.110/X.30-mode the first descriptor after reviving from shut down or initialization
7. To switch to a new starting point of a transmit descriptor chain one should preferably
8. To issue channel commands not affecting the transmit side one should issue
9. Bit combinations in the first transmit command group not described are reserved.
10. Set NITBS = 1 preferably in conjunction with a transmit initialize and transmit clear
TFLAG:
NSF:
User’s Manual
that condition for 32, 240, 32, 32, 8 bits for HDLC, V.110/X.30,TMB, TMR, TMA
respectively and then set it into the transmit off condition.
assignment or the fill/mask bits or the ITBS the channel should be shut down. The
bits should be changed while issuing the transmit off command.
initialization command.
after reset must have the V.110-bit set and contain the E-, S-, X-bits.
use the transmit jump command, only exceptionally the fast transmit abort command
and never the transmit initialize command.
– TH with the last set value
– a transmit clear command if neither a transmit off nor a
– a transmit off if a transmit off condition is set
– a transmit abort if a transmit abort condition is set.
command if TB is to be newly configured, otherwise set NITBS = 0.
transmit abort condition is set
Transparent mode Flag; these bits are only used in the transparent mode A
and constitute the fill code for flag stuffing and for flag filtering. These bits
must be set to ‘0’ if subchanneling is used in transparent mode A. Bit No. 15
is the first bit of the flag to be received/transmitted.
No Short Frame suppression; NSF = 1 is only allowed in combination with
HDLC mode and CS = 1.
In this mode the MUNICH32 transfers all data to the shared memory even if
only one byte (or more) per ‘frame’ is received. No short frame interrupt and
no short frame status bit will be generated in this case.
Note:CRC is still calculated and checked and e.g. a frame of 1 or 2 byte length
(in CRC16 mode) will always cause an FI + ERR interrupt.
157
Detailed Register Description
PEB 20320
01.2000