TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 91 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
C
SNC
SNC slope see Figure 25; slope of
channel separation between
30 dB and 10 dB with respect
to level voltage;
SST[3:0] = 1010
SSL[1:0] = 00 - 38 - dB/V
SSL[1:0] = 01 - 51 - dB/V
SSL[1:0] = 10 - 63 - dB/V
SSL[1:0] = 11 - 72 - dB/V
V
start(HCC)
HCC start voltage see Figure 26;f
audio
= 10 kHz;
equivalent level voltage that
causes α
HCC
= 3 dB;
HSL[1:0] = 10
HST[2:0] = 000 - 1.17 - V
HST[2:0] = 001 - 1.42 - V
HST[2:0] = 010 - 1.67 - V
HST[2:0] = 011 - 1.92 - V
HST[2:0] = 100 - 2.17 - V
HST[2:0] = 101 - 2.67 - V
HST[2:0] = 110 - 3.17 - V
HST[2:0] = 111 - 3.67 - V
C
HCC
HCC slope see Figure 26;f
audio
= 10 kHz;
HST[2:0] = 010
HSL[1:0] = 00 - 9 - dB/V
HSL[1:0] = 01 - 11 - dB/V
HSL[1:0] = 10 - 14 - dB/V
HSL[1:0] = 11 - 18 - dB/V
α
HCC(max)
maximum HCC
attenuation
see Figure 26; f
audio
=10kHz
HCSF = 1; HCSFH = 0 - 10 - dB
HCSF = 0; HCSFH = 0 - 14 - dB
f
cut
cut-off frequency of fixed
HCC
see Figure 27; −3 dB point
(first order filter)
HCF[2:0] = 000 - reserved - kHz
HCF[2:0] = 001 - 2 - kHz
HCF[2:0] = 010 - 3 - kHz
HCF[2:0] = 011 - 5 - kHz
HCF[2:0] = 100 - 7 - kHz
HCF[2:0] = 101 - 10 - kHz
HCF[2:0] = 110 - wide - -
HCF[2:0] = 111 - unlimited - -
Table 111. Dynamic characteristics of the sound processor
…continued
V
CC
= 8.5 V; T
amb
=25
°
C; see Figure 43; all AC values are given in RMS; treble: 10 kHz filter frequency; treble = 0 dB;
bass: 60 Hz filter frequency; bass = 0 dB; f
audio
= 1 kHz; G
vol
= 0 dB; G
fader
= 0 dB; loudness off; standard output gain
(byte OUTPUT; bit OUTA = 0); R
L
= 10 k
Ω
; C
L
= 1 nF; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
C
SNC
α
cs
∆
V
eq.LEVEL
∆
---------------------------
=
C
HCC
α
10 kHz
∆
V
eq.LEVEL
∆
---------------------------
=
