TDA8029 Philips Semiconductors, TDA8029 Datasheet - Page 28

• Manufacturer Part Number: TDA8029
• Description: Low power single card reader
• Manufacturer: Philips Semiconductors

Philips Semiconductors
8.10.1
8.10.1.1
This register is used for resetting the ISO UART.
Table 32 Card select register, address 0h, read and write
Table 33 Description of register bits
8.10.1.2
This register gives the status of the chip after a hardware problem has been signalled or when pin SDWN_N has been
activated.
When PRTL1, PRL1, PTL or SDWN is logic 1, then pin INT0_N is LOW. The bits having caused the interrupt are cleared
when HSR is read (two f
In case of emergency deactivation by PRTL1, SUPL, PRL1 and PTL, bit START in the power control register is
automatically reset by hardware.
Table 34 Hardware Status Register, address Fh, read
Table 35 Description of register bits
2003 Oct 30
Symbol
Reset value
Symbol
Reset value
Low power single card reader
7 to 4
2 to 0
BIT
BIT
BIT
BIT
3
7
6
G
ENERAL REGISTERS
Card Select Register (CSR)
Hardware Status Register (HSR)
RIU
SDWN
SYMBOL
SYMBOL
SDWN
7
0
7
int
cycles after the rising edge of signal RD).
Not used.
Reset ISO UART. If RIU = 0, this bit resets a large part of the UART registers to their
initial value. Bit RIU must be reset to logic 0 for at least 10 ns duration before any
activation. Bit RIU must be set to logic 1 by software before any action on the UART can
take place.
Not used.
Enter shut-down mode. This bit is used for entering the shut-down mode. SDWN is set
when the SDWN_N pin is active (LOW). When the software reads the status, it must:
The same must be done when the chip is powered-on with SDWN_N pin active.
The only way to leave shut-down mode is when pin SDWN_N is HIGH.
Not used.
Deactivate the card if active
Set all ports to logic 1 (for minimizing the current consumption)
Inhibit the interrupts
Go to Power-down mode.
6
0
6
0
PRTL1
5
0
5
0
SUPL
28
4
0
4
0
DESCRIPTION
DESCRIPTION
RIU
3
0
3
0
PRL1
0
0
2
2
Product specification
1
0
1
0
TDA8029
PTL
0
0
0
0