TEA6840 Ver la hoja de datos (PDF) - Philips Electronics
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TEA6840 Datasheet PDF : 44 Pages
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Philips Semiconductors
New In Car Entertainment (NICE) car radio
Preliminary specification
TEA6840H
Table 2 Reference frequency setting in byte 4
BIT 4
0
0
0
0
1
1
1
1
BIT 5
0
0
1
1
0
0
1
1
BIT 6
0
1
0
1
0
1
0
1
FREQUENCY SETTING
(kHz)
100
50
25
20
10
10
10
10
Table 3 AM/FM setting in byte 4
BIT 0
0
0
0
0
1
1
1
1
BIT 1
0
1
0
1
0
1
0
1
BIT 2
0
0
1
1
0
0
1
1
DESCRIPTION
FM standard: dead zone high current charge pump active, FM AGC defined by RF level
and threshold level setting by I2C-bus
FM local: dead zone high current charge pump active, FM AGC source current set to
maximum
FM East Europe: dead zone high current charge pump switched off, current of low
current charge pump set to 1 mA
FM weather band: division ratio N1 set to 1 and I and Q phase shift network switched
on, WX flag signal activated
AM mono, N2 divider set to 5 (SW)
AM stereo, N2 divider set to 5 (SW)
AM mono, N2 divider set to 10 (LW, MW)
AM stereo, N2 divider set to 10 (LW, MW)
In AM mode dead zone high current charge pump switched off, current of low current charge pump set to 1 mA.
Table 4 Test bits setting in byte 5
BIT 0
0
0
1
1
BIT 1
0
1
0
1
OUTPUT AT PIN 15
75.368 kHz TEA6880H reference frequency
PLL synthesizer reference frequency
tuner oscillator frequency divided by division ratio of programmable divider
not used (no output)
Standard setting of the level DAA in byte 6
Definition of the starting point of the level voltage: bit 7 = 1, bits 3 to 6 set to logic 0.
Definition of the slope of the level voltage: bit 2 = 1, bit 0 and bit 1 set to logic 0.
Data to be transmitted by the IC
Data byte 1 bits 0 to 7: output of the IF counter result.
1999 Jul 12
30
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