參數(shù)資料
型號: TEF6894H/V2,518
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44
文件頁數(shù): 18/55頁
文件大?。?/td> 313K
代理商: TEF6894H/V2,518
2003 Oct 21
25
Philips Semiconductors
Product specication
Car radio integrated signal processor
TEF6894H
Table 6
Description of data byte 1
11.1.2
DATA BYTE 2; LEVEL
Table 7
Format of data byte 2
Table 8
Description of data byte 2
BIT
SYMBOL
DESCRIPTION
7
STIN
Stereo indicator. 0 = no pilot signal detected; 1 = pilot signal detected.
6
ASIA
ASI active. 0 = not active; 1 = ASI step is in progress.
5
AFUS
AF update sample. 0 = LEV, USN and WAM information is taken from main frequency
(continuous mode); 1 = LEV, USN and WAM information is taken from alternative
frequency. Continuous mode during AF update and sampled mode after AF update.
Sampled mode reverts to continuous main frequency information after read.
4
POR
Power-on reset. 0 = standard operation (valid I2C-bus register settings); 1 = Power-on
reset detected since last read cycle (I2C-bus register reset). After read the bit will reset
to POR = 0.
3
Reserved.
2 to 0
ID[2:0]
Identication. TEF6894H device type identication; ID[2:0] = 100.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LEV7
LEV6
LEV5
LEV4
LEV3
LEV2
LEV1
LEV0
BIT
SYMBOL
DESCRIPTION
7 to 0
LEV[7:0]
Level. 8-bit value of level voltage from tuner; see Fig.4.
handbook, halfpage
05
VLEVEL (V)
Veq
(V)
LEV[7:0]
255
0
5
0
1
2
3
4
12
3
4
MHC331
Fig.4 Equivalent level voltage Veq (MPH and LEV detector) as a function of level voltage VLEVEL.
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