TEA1211 Ver la hoja de datos (PDF) - Philips Electronics

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TEA1211

High efficiency auto-up/down DC/DC converter

Philips Electronics 

Philips Semiconductors

High efficiency auto-up/down

DC/DC converter

Preliminary specification

TEA1211HN

handbook, full pagewidth

DATA OUTPUT

BY SLAVE

TRANSMITTER

DATA OUTPUT

BY SLAVE

RECEIVER

SCL FROM

MASTER

TRANSMITTER

S

1

2

START

condition

not acknowledge

acknowledge

8

9

clock pulse for

acknowledgement

MDB009

Fig.9 Acknowledge on the I2C-bus.

7.12.5 I2C-BUS PROTOCOL

7.12.5.1 Addressing

Before any data is transmitted on the I2C-bus, the device which should respond is addressed first. The addressing is

always carried out with the first byte transmitted after the start procedure. The (slave) address of the TEA1211HN is

0001 0000 (10h). The subaddress (or word address) is 0000 0000 (00h).

The TEA1211HN acts as a slave receiver only. Therefore the clock signal SCL is only an input signal. The data signal

SDA is a bidirectional line, enabling the TEA1211HN to send an acknowledge.

7.12.5.2 Data

The data consists of one byte, addressing the 40 voltage steps as explained in Tables 1 and 2.

Table 1 Data byte

SUBADDRESS

00h

BIT 7

0

BIT 6

0

BIT 5 BIT 4 BIT 3 BIT 2 BIT 2 BIT 0

CVLVL5 CVLVL4 CVLVL3 CVLVL2 CVLVL1 CVLVL0

Table 2 Translation data byte to voltage level

SUBADDRESS

00h

NAME

CVLVL

SIZE

(BIT)

6

STEP NUMBER

MIN.

0

MAX.

40

MIN. (V)

1.5

STEP

(V)

0.1

MAX. (V)

5.5

2003 Oct 13

10

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