TDA9887TS Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

производитель

TDA9887TS

I2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio

Philips Electronics 

Philips Semiconductors

I2C-bus controlled multistandard alignment-free

IF-PLL demodulator with FM radio

Product specification

TDA9887

9.2.4 DATA BYTE FOR DATA MODE

Table 14 Bit description of SAD register for data mode (SAD = 10)

BIT

E7

E6

E5

E4 to E2

E1 and E0

VALUE

1

0

00

01

10

11

DESCRIPTION

AGC features

dependent on bit E5; see Tables 15 and 16

L standard PLL gating

gating in case of 36 % positive modulation

gating in case of 0 % positive modulation

VIF, SIF and tuner minimum gain

dependent on bit E7; see Table 15

Frequency selection

see Table 17

Standard frequency sound intercarrier (sound 2nd IF)

fFM = 4.5 MHz

fFM = 5.5 MHz

fFM = 6.0 MHz

fFM = 6.5 MHz (for positive modulation choose 6.5 MHz)

Table 15 Options in extended TV mode; bit B3 = 0 of SAD = 00 register

FUNCTION

Pin OP1

Pin OP2

Gain

BIT E7 = 0

BIT E5 = 0

BIT E5 = 1

port function

port function

normal gain

port function

port function

minimum gain

BIT E7 = 1

BIT E5 = 0

port function

VIF-AGC output(1)

normal gain

BIT E5 = 1

VIF-AGC external input(1)

port function

external gain

Note

1. The corresponding port function has to be disabled (set to ‘high-impedance’); see Table 11 and Chapter 12,

characteristics table, note 12.

Table 16 Options in extended radio mode; bit B3 = 1 of SAD = 00 register

FUNCTION

BIT E7 = 0

Pin AFC

FM radio carrier related AFC

BIT E7 = 1

BIT E3 = 0

BIT E3 = 1

SIF-AGC radio output FM-AGC radio output

2004 Aug 25

20

Share Link: