TDA8029HLSLASHC2 datasheet(36/58 Pages) PHILIPS

36 / 58 page

2003 Oct 30

Philips Semiconductors

Product speciﬁcation

Low power single card reader

TDA8029

8.10.3

CARD REGISTERS

When working with a card, the following registers are used for programming some specific parameters.

8.10.3.1

Programmable Divider Register (PDR)

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

UART Conﬁguration Register 2 (UCR2)

Table 56 UART conﬁguration register 2, address 3h, read and write

2OVR

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.

FER

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.

TBE/RBF

Transmit Buffer Empty/Receive Buffer Full. TBE and RBF share the same bit within

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.

BIT

543210

Symbol

PD7

PD6

PD5

PD4

PD3

PD2

PD1

PD0

Reset value

00000

BIT

SYMBOL

DESCRIPTION

7 to 0

PD[7:0]

Programmable divider value.

BIT

Symbol

ENINT1

DISTBE/

RBF

−

ENRX

SAN

AUTOCONV

CKU

PSC

Reset value

0000

BIT

SYMBOL

DESCRIPTION

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