PEF22558EV11GXP Lantiq, PEF22558EV11GXP Datasheet - Page 56

• Manufacturer Part Number: PEF22558EV11GXP
• Manufacturer: Lantiq

Specifications of PEF22558EV11GXP

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

TM
OctalFALC
PEF 22558 E
Test and Maintenance
Automatic loop switching must be enabled through configuration register bits ALS.SILS
for the In-Band Loop codes coming from the system side and ALS.LILS for the In-Band
Loop codes coming from the line side respecively.
Automatic loop switching is logically ored with the appropriate loop switching by register
bits.
If a remote loop is activated by an automatic loop switching the register bit LIM0.JATT
controls also if the jitter attunator is active or not.
If ALS.LILS is set, the remote loop is activated after an activation In-Band loop code (see
ANSI T1 404, chapter 9.4.1.1.) was detected from the line side and if the local loop is not
activated by LIM0.LL = ´1´. The remote loop is deactivated after a deactivation In-Band
loop code (see ANSI T1 404, chapter 9.4.1.2.) was detected from the line side. (But if the
remote loop is addtionally activated by LIM0.RL = ´1´ the remote loop is still active,
because automatic loop switching is logically ored with the appropriate loop switching by
register bits.)
If ALS.SILS is set, the local loop is activated after an activation In-Band loop code (see
ANSI T1 404, chapter 9.4.1.1.) was detected from the system side. The local loop is
deactivated after a deactivation In-Band loop code (see ANSI T1 404, chapter 9.4.1.2.)
was detected from the system side. (But if the local loop is addtionally activated by
LIM0.LL = ´1´ the local loop is still active, because automatic loop switching is logically
ored with the appropriate loop switching by register bits.)
ALS.SILS and ALS.LILS both must not be set to ´1´ simultaneous.
If ALS.SILS or ALS.LILS are set after an In-Band loop code was detected, no automatic
loop switching is performed.
If ALS.LILS is cleared, an automatic activated remote loop is deactivated.
If ALS.SILS is cleared, an automatic activated local loop is deactivated.
The type of detected In-Band loop codes is shown in the interrupt status register bits
ISR6.(3:0)
The bits ISR6.(3:0) will be set to ´1´ if an appropriate In-Band code were detected,
independent if automatic loop switching is enabled or not . (Because the controller knows
if automatic loop switching is enabled, it knows if a loop is activated or not.) Code
detection status only for the line side is displayed in status register bits RSP. LLBBD and
RSP.LLBAD . Masking of ISR6.(3:0) for interrupt can be done by register bits IMR6.(3:0).
TM
Sending of In-Band loop codes is done by the OctalFALC
lasting for at least 5
seconds. Detection of received In-Band loop codes and automatic switching into the
loopback (activaton or deactivation) will be done after the code is lasting for at least 16
or 32 patterns or 4 or 5 seconds, dependend on the setting of the register bits
INBLDTR.INBLDT(1:0).
Delta Sheet
56
Rev. 2.0, 2005-05-03