PEF20550HV21XT Lantiq, PEF20550HV21XT Datasheet - Page 158

• Manufacturer Part Number: PEF20550HV21XT
• Manufacturer: Lantiq

Specifications of PEF20550HV21XT

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Access in demultiplexed P-interface mode:
The ISTA-register should be read after an interrupt in order to determine the interrupt
source.
TIN
SFI
MFFI
MAC
PFI
PIM
4.6.30 Interrupt Status Register EPIC
Access in multiplexed P-interface mode:
Reset value: 00
Semiconductor Group
bit 7
TIN
Timer
CMDR:ST,TIG = 1 has occurred. The TIN-bit is reset by reading ISTA. It
should be noted that the interrupt generation is periodic, i.e. unless stopped
by writing to TIMR, the ISTA:TIN will be generated each time the timer
expires.
Signaling FIFO-Interrupt; this interrupt is generated if there is at least one
valid entry in the CIFIFO indicating a change in a C/I- or SIG-channel.
Reading ISTA does not clear the SFI-bit. Instead SFI is cleared if the CIFIFO
is empty which can be accomplished by reading all valid entries of the
CIFIFO or by resetting the CIFIFO by setting CMDR:CFR to 1.
MFFIFO-Interrupt;
CMDR:MFT1,MFT0) has been executed and the EPIC-1 is ready to accept
the
STAR:MFTO…MFFE. MFFI is reset by reading ISTA.
Monitor channel Active interrupt; the EPIC-1 has found an active monitor
channel. A new search can be started by reissuing the CMDR:MFSO-
command. MAC is reset by reading ISTA.
PCM-Framing Interrupt; the STAR:PSS-bit has changed its polarity. To
determine whether the PCM-interface is synchronized or not, STAR must be
read. The PFI-bit is reset by reading ISTA.
PCM-Input Mismatch; this interrupt is generated immediately after the
comparison logic has detected a mismatch between a pair of PCM-input
lines. The exact reason for the interrupt can be determined by reading the
PICM-register. Reading ISTA clears the PIM-bit. A new PIM-interrupt can
only be generated after the PICM-register has been read.
SFI
H
next
interrupt;
command.
MFFI
a
the
MAC
timer
Additional
last
®
158
-1 (ISTA_E)
interrupt
MF-channel
PFI
information
read
read
Detailed Register Description
previously
PIM
command
can
address: 0E
address: 1C
SIN
requested
be
PEB 20550
(issued
PEF 20550
read
bit 0
H
H
SOV
01.96
from
with
by