PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 124
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PSB2186N-V11TR
Manufacturer Part Number
PSB2186N-V11TR
Description
IC ISDN SUBSCRIB ACCESS 44-PLCC
Manufacturer
Infineon Technologies
Datasheet
1.PSB2186N-V11TR.pdf
(240 pages)
Specifications of PSB2186N-V11TR
Controller Type
Subscriber Access Controller (ISDN)
Interface
4-Wire SPI Serial
Voltage - Supply
4.75 V ~ 5.25 V
Current - Supply
17mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Other names
PSB2186N-V11INTR
PSB2186N-V11TR
PSB2186N-V11TR
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The ISAC-S TE supplies IOM timing signals as long as there is no DIU command in the C/I (C/
I0) channel. If timing signals are no longer required and activation is not yet requested, this is
indicated by programming DIU in the CIX0 register.
As an alternative to activation via IDP1 (DU), the IOM interface can be activated by setting the
CFS bit to "0". The activation of FSC1 and DCL in this case is similar to figure 47. Note that
the IOM interface can be deactivated through DIU (power-down state, figure 46) only if CFS
is set to logical "1".
3.3.2
Assuming the ISAC-S TE has been initialized with the required features of the application, it is
now ready to transmit and receive messages in the D channel (LAPD support).
But as a prerequisite, the layer 1 has to be activated.
The layer-1 functions are controlled by commands issued via the CIXR/CIX0 register. These
commands, sent over the IOM C/I channel 0 to layer 1, trigger certain procedures, such as
activation/deactivation, switching of test loops and transmission of special pulse patterns.
These are governed by layer-1 state diagrams in accordance with CCITT I.430. Responses
from layer 1 are obtained by reading the CIRR/CIR0 register after a CISQ interrupt (ISTA).
The state diagrams are shown in figure 49. The activation/deactivation implemented by the
ISAC-S TE agrees with the requirements set forth in CCITT recommendations. State identifiers
F1-F8 (TE) are in accordance with CCITT I.430.
In the state diagrams a notation is employed which explicitly specifies the inputs and outputs
on the S interface and in the C/I channel: see figure 48.
Figure 48
Semiconductor Group
Activation/Deactivation of S/T Interface
S-INFO
C/
ISAC
OUT
R
-S TE
Ind.
i
X
State
ISAC
Cmd.
i
Y
IN
124
R
-S TE
Unconditional
Transition
Operational Description
ITD05676
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