Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 40 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
8.2.8 Write mode: data byte LEVELALGN
For I
2
C-bus reading of the level voltage and standard alignment see read data byte 1
(see Table 10).
Level alignment should begin with slope alignment (LSL): the level slope does not change
with level start alignment (LST) or broadcast band; therefore a single LSL alignment
setting can be used for all FM and AM band selections.
Level start may change between broadcast bands; therefore generally a separate LST
alignment and setting is used for every broadcast band.
8.2.9 Write mode: data byte IFCF
8.2.10 Write mode: data byte IFCAP
Table 42. LEVELALGN - format of data byte 06h with default setting
7 6 5 4 3 2 1 0
LST4 LST3 LST2 LST1 LST0 LSL2 LSL1 LSL0
10000100
Table 43. LEVELALGN - data byte 06h bit description
Bit Symbol Description
7 to 3 LST[4:0] level start voltage alignment
2 to 0 LSL[2:0] level slope alignment
Table 44. IFCF - format of data byte 07h with default setting
7 6 5 4 3 2 1 0
IFCFA IFNBW IFCF5 IFCF4 IFCF3 IFCF2 IFCF1 IFCF0
00100000
Table 45. IFCF - data byte 07 bit description
Bit Symbol Description
7 IFCFA FM IF filter align mode
0 = normal operation
1 = align mode (fast frequency settling)
6 IFNBW FM IF filter narrow
0 = normal operation
1 = FM IF filter at minimum bandwidth (57 kHz)
5 to 0 IFCF[5:0] FM IF filter center frequency alignment
Table 46. IFCAP - format of data byte 08h with default setting
7 6 5 4 3 2 1 0
IFCAPA 0 0 0 IFCAP3 IFCAP2 IFCAP1 IFCAP0
01000