PEB2256H-V12 Infineon Technologies, PEB2256H-V12 Datasheet - Page 154
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PEB2256H-V12
Manufacturer Part Number
PEB2256H-V12
Description
IC INTERFACE LINE 3.3V 80-MQFP
Manufacturer
Infineon Technologies
Datasheet
1.PEB2256H-V12.pdf
(490 pages)
Specifications of PEB2256H-V12
Applications
*
Interface
*
Voltage - Supply
*
Package / Case
80-SQFP
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PEB2256H-V12
PEB2256H-V12IN
PEB2256H-V12IN
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PEB2256H-V12
Manufacturer:
Infineon Technologies
Quantity:
10 000
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and every time window of 8 (N+1) data bits where N = 23 are detected. Violations of
these rules are indicated by setting the status bit FRS1.PDEN and the interrupt status bit
ISR0.PDEN. Generation of the interrupt status is programmed either with the detection
or with any change of state of the pulse-density alarm (GCR.SCI).
5.4
5.4.1
The serial bit stream is then processed by the transmitter which has the following
functions:
• Frame/multiframe synthesis of one of the four selectable framing formats
• Insertion of service and data link information
• AIS generation (blue alarm)
• Remote alarm (yellow alarm) generation
• CRC generation and insertion of CRC bits
• CRC bits inversion in case of a previously received CRC error or in case of activating
• Generation of loop-up/-down code
• Idle code generation per DS0
The frame/multiframe boundaries of the transmitter can be synchronized externally by
using the SYPX/XMFS pin. Any change of the transmit time slot assignment
subsequently produces a change of the framing bit positions on the line side. This
feature is required if signaling and data link bits are routed through the switching network
and are inserted in transmit direction by the system interface.
In loop-timed configuration (LIM2.ELT) disconnecting the control of the transmit system
highway from the transmitter is done by setting FMR5.XTM. The transmitter is now in a
free running mode without any possibility to update the multiframe position in case of
changing the transmit time slot assignment. The FS/DL-bits are generated independent
of the transmit system interface. For proper operation the transmit elastic buffer size
should be programmed to 2 frames.
The contents of selectable time slots is overwritten by the pattern defined by register
IDLE. The selection of “idle channels” is done by programming the three-byte registers
ICB(3:1).
If AMI coding with zero code suppression (B7-stuffing) is selected, “clear channels”
without B7-stuffing can be defined by programming registers CCB(3:1).
5.4.2
The analog transmitter transforms the unipolar bit stream to ternary (alternate bipolar)
return to zero signals of the appropriate programmable shape. The unipolar data is
provided on pin XDI and the digital transmitter.
Data Sheet
per control bit
Transmit Path in T1/J1 Mode
Transmitter (T1/J1)
Transmit Line Interface (T1/J1)
154
Functional Description T1/J1
FALC56 V1.2
PEB 2256
2002-08-27
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