tea6843hl-v1 NXP Semiconductors, tea6843hl-v1 Datasheet - Page 33
tea6843hl-v1
Manufacturer Part Number
tea6843hl-v1
Description
New In Car Entertainment Nice Extended Car Radio
Manufacturer
NXP Semiconductors
Datasheet
1.TEA6843HL-V1.pdf
(62 pages)
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Philips Semiconductors
2003 Dec 19
handbook, full pagewidth
handbook, full pagewidth
New In Car Entertainment (NICE)
extended car radio
Hold signal is used to hold the quality information for signal processing of the main channel during the alternative frequency jumps.
Quality measurement can be carried out during sample = 1.
t
t
t
t
t
1
2
3
1
2
is the internal clock related logic delay of 100 s.
should be >1.1 ms to ensure correct loading of PLL for the main channel.
should be >0 to ensure inaudible update; t
is the internal clock related logic delay of 100 s.
should be larger than the required PLL tuning time for the given band: FM = 1 ms and AM = 20 ms.
SAMPLE
FMMPX
I
2
HOLD
C-bus
SAMPLE
FMMPX
I
2
HOLD
C-bus
AF channel
t 1
0
AF = 1
t 1
Fig.10 Inaudible RDS update timing diagram.
3
0
< 0 extends the mute period.
1
Fig.11 Preset mode timing diagram.
t 2
1
continuous mode quality test
main channel
2
t 2
AF = 1
33
3
t 3
4
5
t 1
n
6
n + 1
7
t (ms)
MHC369
TEA6843HL
Product specification
8
MHC368
t (ms)
1
0
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