TEA6824 데이터 시트보기 (PDF) - Philips Electronics
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TEA6824 Datasheet PDF : 36 Pages
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Philips Semiconductors
In Car Entertainment (ICE) car radio
Preliminary specification
TEA6824T
Table 1 Structure of the I2C-bus
DESCRIPTION
SPECIFICATION
Bus address of
the TEA6824T
1100001X
Subaddress
not used
Hardware (pin)
programmable
address bits
not available
Default settings by data byte 1 bits 4 to 7 are set to
power-on reset logic 0; all other bits are random
Table 2 Data to be received by the IC for data byte 1
BIT
DESCRIPTION
0 not used
1 LSB reference frequency for
synthesizer
2 reference frequency for
synthesizer
3 MSB reference frequency for
synthesizer
4 not used
5 not used
6 not used
7 I2C-bus to front-end ENABLED
I2C-bus to front-end DISABLED
RESULT
−
−
−
−
−
−
−
bit 7 = 1
bit 7 = 0
Table 3 Reference frequency setting in byte 1;
see Table 1
BIT 3
0
0
0
0
1
1
1
1
BIT 2
0
0
1
1
0
0
1
1
BIT 1
0
1
0
1
0
1
0
1
FREQUENCY SETTING
3 kHz
5 kHz
10 kHz
15 kHz
25 kHz
50 kHz
not defined
not defined
Table 4 Data to be received by the IC for data byte 2
BIT
DESCRIPTION
RESULT
0 AM/FM; AM mode
bit 0 = 0
AM/FM; FM mode
bit 0 = 1
1 divider for AM mixer; divide-by-2
bit 1 = 0
divider for AM mixer; divide-by-6
bit 1 = 1
2 measure time IF-count; 40 ms
bit 2 = 0
measure time IF-count; 4 ms
bit 2 = 1
3 not used
4 IF-prescaler division rate;
divide-by-200
bit 4 = 0
IF-prescaler division rate;
divide-by-25
bit 4 = 1
5 not used
6 temperature compensation of
unweighted voltage level;
temperature coefficient as specified
in Chapter “Characteristics”
temperature compensation off
bit 6 = 0
temperature compensation on
bit 6 = 1
7 not used
Table 5 Data to be transmitted by the IC for data byte 1;
note 1
BIT
DESCRIPTION
0 bit 1 level information
1 bit 2 level information
2 MSB (bit 3) level information
3 LSB multi-path information
4 multi-path information
5 MSB multi-path information
6 not used
7 LSB (bit 0) level information
Note
1. The analog-to-digital conversion for multi-path and
level will be performed during a transmission of any
address to the I2C-bus.
1997 May 05
17
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