TDA9899_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 15 January 2008 28 of 103
NXP Semiconductors
TDA9899
Multistandard hybrid IF processing including car mobile
[1] Intercarrier output level based on wide-band AGC of SIF amplifier.
[2] SIF output level based on wide-band AGC of SIF amplifier.
[3] Intercarrier output level based on narrow-band AGC of FM amplifier.
Table 32. List of output signals at OUT1 and OUT2
Bit Output signal at
TV2 TV1 DIRECT FM EXTFIL OUT1A, OUT1B OUT2A, OUT2B
W1[4] W1[3] W6[0] W1[1] W1[0]
0 0 0 X X zero IF I zero IF Q
0 1 0 X X low IF off
0 X 1 X X off direct IF
1 X 1 0 0 intercarrier
[1]
SIF
[2]
1 X 1 0 1 intercarrier
[3]
SIF
[2]
1 X 1 1 0 intercarrier
[3]
SIF
[2]
1 X 1 1 1 intercarrier
[1]
SIF
[2]
1 X 0 0 0 intercarrier
[1]
off
1 X 0 0 1 intercarrier
[3]
off
1 X 0 1 0 intercarrier
[3]
off
1 X 0 1 1 intercarrier
[1]
off
Table 33. Output mode at pin MPP2 for ATV; dual or radio mode
Bit Pin MPP2 output mode
WAFP RADIO MPP2S1 MPP2S0
W7[6] W1[7] W4[5] W4[4]
0 X 0 0 gain control voltage of FM PLL
0 X 0 1 gain control voltage of SIF amplifier
0 X 1 0 TAGC monitor voltage
0011AFC current output, VIF PLL
0111AFC current output, radio mode
1 X 0 0 voltage output of weak audio signal detector
Table 34. Control function of bit AGCSW
W4[3]
(AGCSW)
V
AGCSWI
Function
0 < 1 V VIF AGC from internal
0 > 2 V VIF AGC from pin AGCVIN
1 < 1 V VIF AGC is not on hold
1 > 2 V VIF AGC is on hold
