TDA8003TSSLASHC2 datasheet(6/24 Pages) PHILIPS

6 / 24 page

2000 Apr 20

Philips Semiconductors

Product speciﬁcation

I2C-bus SIM card interface

TDA8003TS

Fig.2 Pin configuration.

handbook, halfpage

PWROFF

PGND

VDDP

VUP

I/O

SGND

CLK

VCC

SIMCLK

SAD1

SAD0

SIMERR

SDA

VDDI

SCL

SIMI/O

PRES

DEL

VDDS

RST

TDA8003TS

MGR435

FUNCTIONAL DESCRIPTION

Figure 1 shows the block diagram of the TDA8003TS.

The functional blocks are described in the following

sections. It is assumed that the reader of this specification

is aware of GSM11.11 and ISO 7816 terminology.

I2C-bus control

The I2C-bus interface is used:

• To configure the clock to the card in active mode

⁄2fSIMCLK and 1⁄4fSIMCLK)

• To configure the clock to the card in power reduction

mode (stop LOW, stop HIGH or

±1.25 MHz derived

from the internal oscillator)

• To select operation with a 3 or 5 V card

• To start or stop sessions (cold reset)

• To initiate a warm reset

• To enter or leave the Power-down mode

• To request the status (card present or not, hardware

problem occurred, unresponsive card after activation,

supply drop-out detected by the voltage supervisor, card

powered or not)

• To configure SIMI/O and I/O in high-impedance (for use

of several TDA8003TS in parallel).

The structure of the I2C-bus data frames is as follows:

• Commands to the TDA8003TS:

– START/ADDRESS/WRITE

– COMMAND BYTE

– STOP.

The fixed address is 01001XY. X and Y are defined by

the logic levels on pins SAD1 and SAD0 as shown in

Table 1 (connect to ground for logic 0; connect to VDDI

for logic 1). The command bits are described in Table 2.

The commands are executed on the rising edge of the

9th SCL pulse.

• Status from the TDA8003TS (see Table 4). The fixed

address is 01001XY. X and Y are defined by the logic

levels on pins SAD1 and SAD0 as shown in Table 1.

Table 1

Address selections

ADDRESS

SAD1

SAD0

48H

4AH

4CH

4EH

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