TDA7340P datasheet(9/16 Pages) STMICROELECTRONICS

9 / 16 page

NOTES TO THE CHARACTERISTICS (continued)

5. Control range typ 11% of VR (see figure 2)

6. Control range typ 30% of VR (see figure 1)

Figure 1: High Cut Control

-0.4

-0.3

-0.2

-0.1

VSB-VR(V)

D94AU056

SEP

(dB)

VR=3.6V

Figure 2: Stereo Blend

2C BUS INTERFACE

Interface Protocol

The interface protocol comprises:

A start condition (s)

A chip address byte, (the LSB bit determines

read/write transmission).

A subaddress byte

A sequence of data (N-bytes + acknowledge)

A stop condition (P)

ACK = Acknowledge

S = Start

P = Stop

I = Autoincrement

MAX CLOCK SPEED 500kbits/s

Autoincrement

If bit I in the subaddress byte is set to ”1”, the autoincrement of subaddress is enabled.

VTH

VMPX

DC-LEVEL

THIGH

Time

D94AU185

Figure 3

(*) All thresholds are measured by using a pulse with TR =2

µs,

THIGH =2

µs and TF =10µs.

The repetition rate must not increase the PEAK voltage.

1000100

R/W

ACK

DATA

ACK

MSB

LSB

MSB

LSB

MSB

LSB

CHIP ADDRESS

D95AU216

A3 A2 A1 A0

SUBADDRESS

DATA 1 ... DATA n

TDA7340

9/16

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