TDA5235
Functional Description
8-Bit Extended Mode: As two correlators of up to 16 chips length each
working simultaneously in parallel, with matching information insertion
This bit is inserted at the beginning of the payload. “0” is inserted, when correlator A has
matched and “1” when correlator B has matched. The payload length for these two TSI
Pattern may be different.
x_TSILENA = 16d, x_TSILENB = 6d
RunIn
0 0 0 0 0 1 0 1 0 1 0 0 1 0
Incoming Pattern
Manchester Coded
0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1
x_TSIPTB
5 4 3 2 1 0
TSI Pattern B Match
FSYNC
011001
1 1 0 1 0 0 1 0
Data into FIFO
Matching Information inserted
Figure 29
8-Bit Extended TSI Mode
8-Bit Gap Mode: As two sequentially working correlators of up to 16 chips
length each
This mode is only used in combination with the TSI Gap Mode shown below!
This mode is used to define a gap between the two patterns which is preset in the
x_TSIGAP register. To identify exactly the beginning of the gap it would be helpful on
occasion to place the first CV of the gap into the TSI Pattern A. In this case, the gap
length needed for the x_TSIGAP register must be shortened and the x_TVWIN length
must be extended.
x_TSILENA = 8d, x_TSILENB = 12d
TSIGRSYN = 1
RunIn
Gap
RunIn
0
0
0
0
0
1
0 S
0 0 0 0 1 0 0 0 1 1 1 1 1 0 1
Incoming Pattern
Manchester Coded
0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0
x_TSIPTA
2
x_TSIPTB
1110 9 8 7 6 5 4 3 2 1 0
7
6
5
4
3
1
0
TSI Pattern Match
FSYNC
01100100
100101011010
1
1 1 0 1
Data into FIFO
Figure 30
8-Bit Gap TSI Mode
Data Sheet
58
V1.0, 2010-02-19
INFINEON [ Infineon ]
