TDA5231XT Infineon Technologies, TDA5231XT Datasheet - Page 102
TDA5231XT
Manufacturer Part Number
TDA5231XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TDA5231XT.pdf
(186 pages)
Specifications of TDA5231XT
Operating Temperature (min)
-40C
Operating Temperature (max)
105C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Lead Free Status / Rohs Status
Compliant
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2.4.13
The Frame Synchronization Unit (Framer) synchronizes to a specific pattern to identify
the exact start of a data frame. This pattern is called TSI (Telegram Start Identifier).
There are different TSI modes selectable via the configuration:
•
•
•
•
All SFR configuring the Frame Synchronization Generation Unit are supporting the dual
configuration capability (Config A and B). The Framer starts working in Slave Mode after
Symbol Sync found and in Self Polling Mode after wake up found and searches for a
frame until TSI is found or synchronization is lost. The input of the Framer is a sequence
of manchester coded data (Chips). Basically the Framer consists of two identical
correlators of 16 chips in length. It allows a Telegram Start Identifier (TSI) to be
composed of Manchester coded “Zeros” and “Ones”. The active length of each of the 16
chips correlators is defined independently in the TSILENA and TSILENB registers. The
pattern to match is defined as sequence of chips in the TSIPTA0, TSIPTA1, TSIPTB0
and TSIPTB1 registers.
Note that the RUNIN length shown in the figures below is the maximum needed RUNIN
with the length of 8 chips set in the register. The needed RUNIN time of the receiver can
be shorter by 1-2 chips. It depends on the expected data rate error, duty cycle error, and
the starting chip sequence of the protocol.
Data Sheet
TSI Mode 16-Bit, supporting a TSI length up to 16 bits or 32 chips
TSI Mode 8-Bit, supporting two independent TSI pattern of up to 8 bits length
TSI GAP Mode 8-Bit, supporting the TSI GAP mode
TSI Mode 8-Bit extended, identical to TSI Mode 8-Bit, but identifies which pattern
matches by adding a single bit to the data frame
Frame Synchronization
98
Functional Description
Version 4.0, 2007-06-01
TDA523x
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