Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 51 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MST setting controls
the compression range. For default full compression MST = 7 is used; see Table 81.
[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MSL setting controls
the compression range. For default 2 : 1 compression MSL = 1 is used; see Table 82.
[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MSL setting controls
the compression range. For default 2 : 1 compression MSL = 1 is used; see Table 82.
Table 68. Start of soft mute control weak signal processing; AM mode
[1]
MST2 MST1 MST0 Soft mute control start (V
eq.LEVEL
)
0 0 0 1.5 V
0 0 1 1.75 V
0 1 0 2.0 V
0 1 1 1.25 V
1 0 0 1.38 V
1 0 1 1.62 V
1 1 0 1.88 V
1 1 1 2.12 V
Table 69. Slope of soft mute control weak signal processing; FM mode
[1]
MSLE MSL1 MSL0 Soft mute control slope (α
AF
/V
eq.LEVEL
)
0 0 0 8 dB/V
0 0 1 16 dB/V
0 1 0 24 dB/V
0 1 1 32 dB/V
1 0 0 40 dB/V
1 0 1 48 dB/V
1 1 0 reserved
1 1 1 reserved
Table 70. Slope of soft mute control weak signal processing; AM mode
[1]
MSL1 MSL0 MSLE Soft mute control slope (α
AF
/V
eq.LEVEL
)
0 0 0 8 dB/V
0 0 1 12 dB/V
0 1 0 16 dB/V
0 1 1 20 dB/V
1 0 0 24 dB/V
1 0 1 28 dB/V
1 1 0 32 dB/V
1 1 1 36 dB/V