TDA18211HD datasheet(16/66 Pages) NXP

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TDA18211HD_5

Product data sheet

Rev. 05 — 2 June 2009

16 of 66

NXP Semiconductors

TDA18211HD

DVB-T Silicon Tuner IC

[1]

In all modes, the I2C-bus interface remains active. All other codes are not valid.

9.3.8 Description of Easy Prog byte 4

It is recommended to follow the ﬂowcharts described in Section 9.4 in order to perform

any calibration, as they require a precise set of sequential operations. The further

comments can only give an overview of what is typically done during the ﬂowchart.

The TDA18211HD has two calibration modes: one for the image rejection calibration, and

one for the RF tracking ﬁlters calibration.

Table 16.

Standby modes[1]

Bit

Circuit

Mode

SM_LT

SM_XT

Loop-

through

Slave-

tuner

output

Crystal

oscillator

Normal mode

Standby mode with crystal

oscillator, slave-tuner output and

loop-through output on

off

Standby mode with only crystal

oscillator and its output buffer on

off

Device-off mode

Table 17.

EP4 - Easy Prog byte 4 (subaddress 06h) bit description

Legend: * power-on reset value

Bit

Symbol

Access Value Description

FM_RFN

R/W

selection which input is fed to RF ﬁlter

FM input (RF LNA on; FM LNA on)

RF input (RF LNA on; FM LNA off)

XTOUT_ON

R/W

16 MHz on pins XTOUTP and XTOUTN

not 16 MHz on pins XTOUTP and XTOUTN

R/W

must be set to logic 1

4 to 2 IF_LEVEL[2:0]

R/W

IF output level selection and attenuation with regard to

2 V (p-p)

000*

2 V (p-p); 0 dB

001

1.25 V (p-p); 4 dB

010

1 V (p-p); 6 dB

011

0.8 V (p-p); 8 dB

100

not used

101

not used

110

not used

111

0.5 V (p-p); 12 dB

1 to 0 CAL_MODE[1:0] R/W

calibration mode selection

00*

no calibration (Normal mode)

Power detection mode

image rejection calibration (IRCAL) mode

RF tracking ﬁlters calibration (RFCAL) mode

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