TEF6894H datasheet(25/55 Pages) PHILIPS

25 / 55 page

2003 Oct 21

Philips Semiconductors

Product speciﬁcation

Car radio integrated signal processor

TEF6894H

Table 6

Description of data byte 1

11.1.2

DATA BYTE 2; LEVEL

Table 7

Format of data byte 2

Table 8

Description of data byte 2

BIT

SYMBOL

DESCRIPTION

STIN

Stereo indicator. 0 = no pilot signal detected; 1 = pilot signal detected.

ASIA

ASI active. 0 = not active; 1 = ASI step is in progress.

AFUS

AF update sample. 0 = LEV, USN and WAM information is taken from main frequency

(continuous mode); 1 = LEV, USN and WAM information is taken from alternative

frequency. Continuous mode during AF update and sampled mode after AF update.

Sampled mode reverts to continuous main frequency information after read.

POR

Power-on reset. 0 = standard operation (valid I2C-bus register settings); 1 = Power-on

reset detected since last read cycle (I2C-bus register reset). After read the bit will reset

to POR = 0.

−

Reserved.

2 to 0

ID[2:0]

Identiﬁcation. TEF6894H device type identiﬁcation; ID[2:0] = 100.

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

LEV7

LEV6

LEV5

LEV4

LEV3

LEV2

LEV1

LEV0

BIT

SYMBOL

DESCRIPTION

7 to 0

LEV[7:0]

Level. 8-bit value of level voltage from tuner; see Fig.4.

handbook, halfpage

VLEVEL (V)

Veq

(V)

LEV[7:0]

255

MHC331

Fig.4 Equivalent level voltage Veq (MPH and LEV detector) as a function of level voltage VLEVEL.

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