pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 154

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

User’s Manual
– transmit off
For HDLC, TMB, TMR the first part of the frame of the suspended descriptor is sent
and append by
Afterwards the next frame is started.
For V.110/X.30 three 10-octet frames with errors in the synchronization pattern are
sent after the data of the suspended descriptor, afterward the next data are sent in
correct frames.
For TMA a TFLAG (FA = 1) or FF
data of the suspended descriptor, afterwards the next data are sent.
TI = 0, TO = 1, TA = 0 (clears a previous transmit abort condition, sets a transmit off
condition, effects only the serial interface)
The transmit channel is disabled immediately, i.e. the transmit formatter is reset and
the transmit buffer is not accessed for this channel. The output time slots are tristated.
Upon leaving the transmit off mode the transmit link list must be initialized by a
transmit reinitialize command. Otherwise the transmission will be started with the
remaining data still stored in TB and continue with the old link list. If a loop condition
is set the transmit off does not reset the transmit formatter, it only tristates the serial
output line.
After the transmit off condition is cleared by the transmit initialize command.
• In HDLC, TMB, TMR, V.110/X.30 the device starts with the interframe time-fill
and then with the frame in the descriptor at FTDA. For V.110/X.30 this descriptor must
have the V.110-bit set and point to the E-, S-, X-bits, the data are then at the next
transmit descriptor.
• In TMA mode the device starts with the interframe time-fill
and then with the data in the descriptor at the FTDA.
7E for HDLC and IFTF = 0
FF for HDLC and IFTF = 1
00 for TMB, TMR, V.110/X.30
TFLAG
FF
H
at least
at least
for FA = 1
for FA = 0
011 1111 1111 111 for HDLC
00
00 00
H
H
H
(FA = 0) is sent in at least one time slot after the
for TMB
for TMR
154
Detailed Register Description
PEB 20320
01.2000