psf2115 ETC-unknow, psf2115 Datasheet - Page 169

• Manufacturer Part Number: psf2115
• Description: Isdn Adapter Circuit Ipac
• Manufacturer: ETC-unknow

Table 24 Interrupts from D-Channel HDLC Controller (cont’d)
Mnemonic Register Meaning
Semiconductor Group
XMR
XDU
RSC
TIN
TIN2
ISTAD
EXIRD
EXIRD
ISTAD
ISTAD
Transmit Message Repeat.
Frame must be repeated
because of a transmission
error (all HDLC message
transfer modes) or a received
negative acknowledgment
(auto mode only) from peer
station.
Transmit Data Underrun.
Frame has been aborted
because the XFIFOD holds no
further data and XME (i.e.
XIF&XME or XTF&XME) was
not issued.
Receive Status Change. A
status change from peer
station has been received (RR
or RNR frame), auto mode
only.
Timer Interrupt. External timer
expired or, in auto mode,
internal timer (T200) and
repeat counter (N200) both
expired.
Timer Interrupt 2.
Timer 2 expired (single
interrupt or continuous
interrupts with timer period).
169
Reaction
Transmission of the frame
must be repeated. No
indication to layer 3.
Transmission of the frame
must be repeated. Possible
cause: excessively long
software reaction times.
Stop sending new I frames.
Link re-established. Indication
to layer 3. (Auto mode)
No acknowledge necessary.
Restart timer if required.
Operational Description
PSB 2115
PSF 2115
11.97