SLRC400 Datasheet, PDF (85/130 Pages) NXP Semiconductors – I·CODE Reader IC

Philips Semiconductors
I•CODE Reader IC
Product Specification Rev. 2.0 November 2001
SL RC400
13.2.1 ANTENNA DRIVER OUTPUT SOURCE RESISTANCE
The output source conductance of TX1 and TX2 for driving a HIGH level may be adjusted via the value
GsCfgCW in the CwConductance Register in the range from about 1 up to 100 Ohm. The values given are
relative to the reference resistance Rs_rel, that is measured during production test and stored in the SL RC400
E²PROM. It can be obtained from the Product Information Field (see chapter 6.2).
The electrical specification can be found in chapter 19.4.3.
13.2.1.1 Source Resistance Table
GsConfCW
0
16
32
48
1
17
2
3
33
18
4
5
19
6
7
49
34
20
8
9
21
10
11
35
22
12
13
23
14
50
36
15
EXPGsConfCW
0
1
2
3
0
1
0
0
2
1
0
0
1
0
0
3
2
1
0
0
1
0
0
2
1
0
0
1
0
3
2
0
MANT GsConfCW
0
0
0
0
1
1
2
3
1
2
4
5
3
6
7
1
2
4
8
9
5
A
B
3
6
C
D
7
E
2
4
F
Rs rel
8
8
8
8
1,0000
0,5217
0,5000
0,3333
0,2703
0,2609
0,2500
0,2000
0,1739
0,1667
0,1429
0,1402
0,1351
0,1304
0,1250
0,1111
0,1043
0,1000
0,0909
0,0901
0,0870
0,0833
0,0769
0,0745
0,0714
0,0701
0,0676
0,0667
GsConfCW
24
25
37
26
27
51
38
28
29
39
30
52
31
40
41
53
42
43
54
44
45
55
46
47
56
57
58
59
60
61
62
63
EXPGsConfCW
1
1
2
1
1
3
2
1
1
2
1
3
1
2
2
3
2
2
3
2
2
3
2
2
3
3
3
3
3
3
3
3
MANT GsConfCW
8
9
5
A
B
3
6
C
D
7
E
4
F
8
9
5
A
B
6
C
D
7
E
F
8
9
A
B
C
D
E
F
Rs rel
0,0652
0,0580
0,0541
0,0522
0,0474
0,0467
0,0450
0,0435
0,0401
0,0386
0,0373
0,0350
0,0348
0,0338
0,0300
0,0280
0,0270
0,0246
0,0234
0,0225
0,0208
0,0200
0,0193
0,0180
0,0175
0,0156
0,0140
0,0127
0,0117
0,0108
0,0100
0,0093
Table 13-3: Source Resistance of n-Channel Driver Transistor of TX1 and TX2 vs. GsConfCW
85
Preliminary