PEB3264FV1.4 Datasheet, PDF (152/374 Pages) Infineon Technologies AG – Dual Channel Subscriber Line Interface Concept

DuSLIC
07_H INTREG1 Interrupt Register 1 (read-only)
80_H
Y
Bit
7
6
5
4
3
2
1
0
INT-CH HOOK GNDK GNKP ICON VTRLIM OTEMP SYNC-
FAIL
INT-CH
Interrupt channel bit. This bit indicates that the corresponding channel
caused the last interrupt. Will be automatically set to zero after all interrupt
registers were read.
INT-CH = 0
No interrupt in corresponding channel.
INT-CH = 1
Interrupt caused by corresponding channel.
HOOK
Indicates on-hook or off-hook for the loop in all operating modes (via the ITx
pin); filtered by the DUP (Data Upstream Persistence) counter and interrupt
generation masked by the HOOK-M bit. Indicates ground start in case of
ground start mode is selected. A change of this bit generates an interrupt.
HOOK = 0
On-hook.
HOOK = 1
Off-hook detected.
GNDK
Indicates ground key information in all active modes via the IL pin; filtered
for AC suppression by the DUP counter and interrupt generation masked by
the GNDK-M bit. A change of this bit generates an interrupt.
GNDK = 0
No ground key indicated.
GNDK = 1
Ground key indication; longitudinal current (threshold 17
mA) detected.
GNKP
Ground key polarity. Indicating the active Ground Key level
(positive/negative) interrupt generation masked by the GNKP-M bit. A
change of this bit generates an interrupt. This bit can be used to obtain
information about interference voltage influence.
GNKP = 0
Negative ground key threshold level active.
GNKP = 1
Positive ground key threshold level active.
Preliminary Data Sheet
152
DS3, 2003-07-11