psf2115 ETC-unknow, psf2115 Datasheet - Page 122
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psf2115
Manufacturer Part Number
psf2115
Description
Isdn Adapter Circuit Ipac
Manufacturer
ETC-unknow
Datasheet
1.PSF2115.pdf
(317 pages)
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Quantity
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Part Number:
psf21150FV1.4
Manufacturer:
INFINEON/英飞凌
Quantity:
20 000
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Non-Terminal Mode / LT-S Mode
Similar as in LT-T mode, both DU and DD are inactive outside the selected 4-byte
subscriber channel.
Also the reset value for the active channel can be selected by pin strapping (in LT-S and
LT-T modes by CH0-2), however after reset the host can reconfigure the active IOM-2
channel for layer 2 in ADF1:CSEL0-2. This reconfiguration is not valid for layer 1 and B-
channel HDLC.
Inside the programmed 4-byte subscriber channel (see figure 58):
– DU carries the 2B+D channels coming from S/T interface, and the MONITOR and
– DD carries the 2B+D channels towards the S/T interface, and the MONITOR and
By configuration of bit SDL (Switch Data Line, SPCR register) the data lines of the layer
2 controller of the IPAC can be switched. If SDL is set to ’0’, the layer 2 controller sends
the MONITOR, D and C/I-channels on DU, normally carried by DD, i.e. normally destined
to layer 1 S/T interface. This feature can be used for test purposes, e.g. to send the D-
channel towards the system instead of the subscriber (see figure 59).
Semiconductor Group
C/I channels from the layer-1
C/I channels to the layer-1.
122
Functional Description
PSB 2115
PSF 2115
11.97
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