2003 Oct 21 37
Philips Semiconductors Product specification
Car radio integrated signal processor TEF6894H
11.2.9 SUBADDRESS BH; INPUT AND ASI
Table 38 Format of data byte BH with default setting
Table 39 Description of data byte BH
Table 40 FM noise blanker level sensitivity
Table 41 Audio input tone/volume part
Table 42 Audio step interpolation time constant
11.2.10 S
UBADDRESS CH; LOUDNESS
Table 43 Format of data byte CH with default setting
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
NBL1 NBL0 INP1 INP0 MUTE ASI AST1 AST0
10001100
BIT SYMBOL DESCRIPTION
7 and 6 NBL[1:0] FM noise blanker level sensitivity. See Table 40.
5 and 4 INP[1:0] Audio input tone/volume part. See Table 41.
3 MUTE Audio mute. 0 = no mute; 1 = mute.
2 ASI Audio step interpolation. 0 = disable; 1 = enable.
1 and 0 AST[1:0] Audio step interpolation time constant. ASI time is 0 s when ASI = 0; see Table 42.
NBL1 NBL0 SENSITIVITY OF FM NOISE BLANKER AT LEVEL INPUT (mV)
00 9
01 18
10 28
1 1 reserved
INP1 INP0 AUDIO INPUT FOR TONE/VOLUME PART
0 0 radio
01 CD
1 0 tape
1 1 phone
AST1 AST0 ASI TIME (ms)
00 1
01 3
10 10
11 30
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
− LDN4 LDN3 LDN2 LDN1 LDN0 LLF LHB
− 0000011