2003 Oct 21 32
Philips Semiconductors Product specification
Car radio integrated signal processor TEF6894H
11.2.6 SUBADDRESS 8H; HIGHCUT
Table 29 Format of data byte 8H with default setting
Table 30 Description of data byte 8H
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
HST2 HST1 HST0 HSL1 HSL0 HCF2 HCF1 HCF0
01101111
BIT SYMBOL DESCRIPTION
7 to 5 HST[2:0] High cut control start (weak signal processing). See Fig.9.
4 and 3 HSL[1:0] High cut control slope (weak signal processing). See Fig.10.
2 to 0 HCF[2:0] Fixed high cut control (maximum HCC bandwidth). See Table 31 and Fig.11.
handbook, full pagewidth
MHC336
0 0.5
V
eq
(V)
121.5
α
HCC
(dB)
2.5 3 3.5
0
12
15
9
6
3
(1) (2) (3) (4) (5) (6) (7) (8)
Fig.9 High cut control attenuation α
HCC
as a function of equivalent level voltage V
eq
(start).
(5) HST[2:0] = 100 = 2.5 V.
(6) HST[2:0] = 101 = 3 V.
(7) HST[2:0] = 110 = 3.5 V.
(8) HST[2:0] = 111 = 4 V.
HCF[2:0] = 111, HCSF = 0,
HSL[1:0] = 10 and f
audio
=10kHz
(1) HST[2:0] = 000 = 1.5 V.
(2) HST[2:0] = 001 = 1.75 V.
(3) HST[2:0] = 010 = 2 V.
(4) HST[2:0] = 011 = 2.25 V.
