TDA8029 Philips Semiconductors, TDA8029 Datasheet - Page 36

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

Philips Semiconductors
8.10.3
When working with a card, the following registers are used for programming some specific parameters.
8.10.3.1
This register is used for counting the card clock cycles forming the ETU. It is an auto-reload 8 bits counter counting from
the programmed value down to 0.
Table 54 Programmable divider register, address 2h, read and write
Table 55 Description of register bits
8.10.3.2
Table 56 UART configuration register 2, address 3h, read and write
2003 Oct 30
Symbol
Reset value
Symbol
Reset value
Low power single card reader
7 to 0
BIT
BIT
BIT
BIT
2
1
0
C
ARD REGISTERS
Programmable Divider Register (PDR)
UART Configuration Register 2 (UCR2)
OVR
FER
TBE/RBF
PD[7:0]
SYMBOL
SYMBOL
ENINT1
PD7
7
0
7
0
Overrun. OVR = 1 if the UART has received a new character whilst URR was full. In this
case, at least one character has been lost.
Framing Error. FER = 1 when I/O was not in high-impedance state at 10.25 ETU after a
start-bit. It is reset when USR has been read.
Transmit Buffer Empty/Receive Buffer Full. TBE and RBF share the same bit within
register USR: when in transmission mode the relevant bit is TBE; when in reception
mode it is RBF.
TBE = 1 when the UART is in transmission mode and when the microcontroller may write
the next character to transmit in register UTR. It is reset when the microcontroller has
written data in the transmit register or when bit T/R in register UCR1 has been reset
either automatically or by software. After detection of a parity error in transmission, it is
necessary to wait 13.5 ETU before rewriting the character which has been NAKed by the
card (manual mode, see Table 51).
RBF = 1 when register FIFO is full. The microcontroller may read some of the characters
in register URR, which clears bit RBF.
Programmable divider value.
DISTBE/
RBF
PD6
6
0
6
0
PD5
5
0
5
0
ENRX
36
PD4
4
0
4
0
DESCRIPTION
DESCRIPTION
SAN
PD3
3
0
3
0
AUTOCONV
PD2
2
0
0
2
PD1
CKU
Product specification
1
0
1
0
TDA8029
PD0
PSC
0
0
0
0