Texas Instruments TRIS TMS37122 - 2.10.3 Configuration Options; 2.10.3.1 Wake Sensitivity VWAKEA;1; Table 3: Wake Sensitivity VWAKEA;1 Options

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August ’01 Chapter 2. Electrical Description
2.10.3 Configuration Options
2.10.3.1 Wake Sensitivity VWAKEA/1
A three-dimensional antenna arrangement typically consists of 2 ferrite antennas, positioned
in an angle of 90 degree and an air coil antenna. Preferably the air coil antenna is connected
to RF1 because for key fob and card applications this antenna has the optimum orientation
with respect to the Base Station antennas. In order to match the sensitivity of the air coil an-
tenna to the sensitivity to the equal ferrite antennas the sensitivity RF1 can be reduced (see
Table 3 and Figure 21).
Table 3: Wake Sensitivity VWAKEA/1 Options
Wake Sensitivity
DEC
VWAKEA/1 min
[mVpp]
VWAKEA/1
nom [mVpp]
VWAKEA/1 max
[mVpp]
MSB LSB
15 2 5 10 1 1 1 1
14 2.5 7 13.2 1 1 1 0
13 3.0 9.0 16.4 1 1 0 1
12 3.5 11 19.6 1 1 0 0
11 4.0 13.0 22.8 1 0 1 1
10 4.5 15.0 26.0 1 0 1 0
9 5.0 17.0 29.2 1 0 0 1
8 5.5 19.0 32.4 1 0 0 0
7 6.0 21.0 35.6 0 1 1 1
6 6.5 23.0 38.8 0 1 1 0
5 7.0 25.0 42.0 0 1 0 1
4 7.5 27.0 45.2 0 1 0 0
3 8.0 29.0 48.4 0 0 1 1
2 8.5 31.0 51.6 0 0 1 0
1 9.0 33.0 54.8 0 0 0 1
0 9.5 35.0 58 0 0 0 0