TDA8029 Datasheet, PDF (41/58 Pages) NXP Semiconductors – Low power single card reader

Philips Semiconductors
Low power single card reader
Product specification
TDA8029
8.10.3.6 Power Control Register (PCR)
This register is used for starting or stopping card sessions.
Table 66 Power control register, address 7h, read and write
BIT
7
Symbol
−
Reset value
−
6
5
4
−
−
−
−
0
0
3
2
1
0
1V8
RSTIN
3V/5V
START
0
0
0
0
Table 67 Description of register bits
BIT
7 to 4
3
2
1
0
SYMBOL
−
1V8
RSTIN
3V/5V
START
DESCRIPTION
Not used.
Select 1.8 V. If 1V8 = 1, then V_CC = 1.8 V. It should be noted that specifications are not
guaranteed at this voltage when the supply voltage V_DD is less than 3 V.
Card reset. When the card is activated, pin RST is the copy of the value written in
RSTIN.
Select 3 V or 5 V. If 3V/5V = 1, then V_CC = 3 V. If 3V/5V = 0, then V_CC = 5 V.
Activate and deactivate card. If START = 1 is written by the controller, then the card is
activated (see description of activation sequence in Section 8.16). If the controller writes
START = 0, then the card is deactivated (see description of deactivation sequence in
Section 8.17). START is automatically reset in case of emergency deactivation.
For deactivating the card, only bit START should be reset.
2003 Oct 30
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