Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 47 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
8.2.15 Write mode: data byte HIGHCUT
SSL = 63 dB/V. SST = 2.5 V.
a. Start. b. Slope.
Fig 25. SNC start and slope settings versus equivalent level voltage; SNC detector (level, USN and WAM), USN
detector and WAM detector
V
eq. LEVEL
(V)
0.5 32.51.5 21
001aab493
20
10
30
40
α
cs
(dB)
0
0000 0111 1000 1111
SST[3:0]
V
eq. LEVEL
(V)
0.5 32.51.5 21
001aab539
20
10
30
40
α
cs
(dB)
0
00 01 10
11
SSL[1:0]
Table 61. HIGHCUT - format of data byte 0Dh with default setting
7 6 5 4 3 2 1 0
HST2 HST1 HST0 HSL1 HSL0 HCF2 HCF1 HCF0
01101111
Table 62. HIGHCUT - data byte 0Dh bit description
Bit Symbol Description
7 to 5 HST[2:0] HCC start; start setting of the high cut control; see
Table 63 and Figure 26
4 and 3 HSL[1:0] HCC slope; slope setting of the high cut control (α
10 kHz
/V
eq.LEVEL
); see Figure 26
00 = 9 dB/V
01 = 11 dB/V
10 = 14 dB/V
11 = 18 dB/V
2 to 0 HCF[2:0] HCC maximum bandwidth; setting of the fixed high cut control; see
Table 64, Figure 26 and
Figure 27