PEB3086 Infineon Technologies, PEB3086 Datasheet - Page 65

• Manufacturer Part Number: PEB3086
• Description: ISDN Subscriber Access Controller
• Manufacturer: Infineon Technologies

– The external local loop (external Loop A) is activated in the same way as the internal
– In remote line loop (RLP) received data is looped back to the S/T interface. The D-
Figure 33
– transmission of special test signals on the S/T interface according to the modified AMI
Two kinds of test signals may be transmitted by the ISAC-SX:
– The single pulses are of alternating polarity. One pulse is transmitted in each frame
– The continuous pulses are of alternating polarity. 48 pulses are transmitted in each
Data Sheet
Depending on the DIS_TX bit in the TR_CONF2 register the internal local loop can be
transparent or non transparent to the S/T line.
local loop described above. Additionally the EXLP bit in the TR_CONF0 register has
to be programmed and the loop has to be closed externally as described in
The S/T interface level detector is disabled.
This allows complete system diagnostics.
channel information received from the line card is transparently forwarded to the
output IOM-2 D-channel. The output B-channel information on IOM-2 is fixed to ‘FF’
while this test loop is active. The remote line loop is programmable in
TR_CONF2.RLP.
code are initiated via a C/I command written in CIX0 register (see
resulting in a frequency of the fundamental mode of 2 kHz. The corresponding C/I
command is SSP (Send Single Pulses).
frame resulting in a frequency of the fundamental mode of 96 kHz. The corresponding
C/I command is SCP (Send Continuous Pulses).
External Loop at the S/T-Interface
SCOUT-S(X)
SX1
SX2
SR1
SR2
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Description of Functional Blocks
100 W
100 W
Chapter
PEB 3086
Figure
2003-01-30
ISAC-SX
3.5.4)
33.
H