TDA8029HLSLASHC2 datasheet(38/58 Pages) PHILIPS

38 / 58 page

2003 Oct 30

Philips Semiconductors

Product speciﬁcation

Low power single card reader

TDA8029

Table 58 Baud rate selection using values F and D; card clock frequency fCLK = 3.58 MHz for PSC = 31 and

fCLK = 4.92 MHz for PSC = 32 (example: in this table 31;12 means prescaler set to 31 and PDR set to 12)

8.10.3.3

Guard Time Register (GTR)

The guard time register is used for storing the number of guard ETUs given by the card during ATR. In transmission

mode, the UART will wait this number of ETUs before transmitting the character stored in register UTR.

Table 59 Guard time register, address 5h, read and write

Table 60 Description of register bits

01234569

31;12

9600

31;12

9600

31;18

6400

31;24

4800

31;36

3200

31;48

2400

31;60

1920

32;16

9600

32;24

6400

32;32

4800

32;48

3200

32;64

2400

31;6

19200

31;6

19200

31;9

12800

31;12

9600

31;18

6400

31;24

4800

31;30

3840

32;8

19200

32;12

12800

32;16

9600

32;24

6400

32;32

4800

31;3

38400

31;3

38400

−

31;6

19200

31;9

12800

31;12

9600

31;15

7680

32;4

38400

32;6

25600

32;8

19200

32;12

12800

32;16

9600

−−−

31;3

38400

−

31;6

19200

−

32;2

76800

32;3

51300

32;4

38400

32;6

25600

32;8

19200

−−−−−

31;3

38400

−

32;1

153600

−

32;2

76800

32;3

51300

32;4

38400

−−−−−−−−−

32;1

153600

−

32;2

76800

31;1

115200

31;1

115200

−

31;2

57600

31;3

38400

31;4

28800

31;5

23040

−

32;2

76800

−

32;4

38400

−

−−−−−−

31;3

38400

−−−−−

BIT

543210

Symbol

GT7

GT6

GT5

GT4

GT3

GT2

GT1

GT0

Reset value

00000

BIT

SYMBOL

DESCRIPTION

7 to 0

GT[7:0]

Guard time value. When GT[7:0] = FFh:

• In protocol T = 1

– TDA8029HL/C1 operates at 11 ETU

– TDA8029HL/C2 operates at 10.8 ETU.

• In protocol T = 0.

– TDA8029HL/C1 operates at 12 ETU

– TDA8029HL/C2 operates at 11.8 ETU.

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