TDA8295HN/C1 NXP Semiconductors, TDA8295HN/C1 Datasheet - Page 37

• Manufacturer Part Number: TDA8295HN/C1
• Description: Modulator / Demodulator IF DEMODULATOR
• Manufacturer: NXP Semiconductors

Specifications of TDA8295HN/C1

• Package / Case: HVQFN-40
• Maximum Operating Temperature: + 70 C
• Maximum Power Dissipation: 490 mW
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 1.2 V, 3.3 V
• Supply Current: 0.136 A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TDA8295HN/C1,557

NXP Semiconductors
TDA8295_1
Product data sheet
9.3.12 SSIF and mono sound settings
Table 37.
Legend: * = default value.
Table 38.
Legend: * = default value.
Bit
7
6 and 5 AM_FM_SND[1:0]
4 to 0
Bit
7 to 5
4
Symbol
-
DEEMPH[4:0]
Symbol
-
HD_DK
SOUNDSET_1 register (address 20h) bit description
SOUNDSET_2 register (address 21h) bit description
Digital global standard low IF demodulator for analog TV and FM radio
Rev. 01 — 4 February 2008
Access Value
R/W
R/W
Access Value
R/W
R/W
R/W
-
0*
1
X
-
01*
10
XX
0 0001*
0 0010
0 0100
0 1000
1 0000
Description
not used
When active, the internal FM mono sound
demodulator can handle excessive FM deviations up
to 400 kHz. This might happen in D/K standard
China. To activate this mode, it is mandatory to set
D/K standard first. The sound output level has to be
adapted accordingly by the microprocessor to avoid
sound DAC clipping. E.g. for 400 kHz FM deviation,
the 12 dB setting of the sound level register
(see
high Deviation mode off
high Deviation mode on
don’t care if SSIF output is chosen
(SSIF_SND[1:0] = 10)
Table
Description
not used
Output mode for inbuilt FM/AM mono sound
demodulator
mono sound de-emphasis adjustment to
compensate transmitter pre-emphasis; or
low-pass filter to remove out of audio band
interferers
FM sound
AM sound (only L/L-accent standard)
don’t care if SSIF output is chosen
(SSIF_SND[1:0] = 10)
de-emphasis of 75 s for M/N standard or
non-European FM radio to compensate the
transmitter pre-emphasis
de-emphasis of 50 s for B/G/H, D/K and
I standard or European FM radio to
compensate the transmitter pre-emphasis
low-pass filter with 30 kHz 3 dB cut-off
frequency to remove out of audio band
interferers
low-pass filter with 140 kHz 3 dB cut-off
frequency to drive an external BTSC stereo
decoder
The de-emphasis filter is bypassed. This
can be used for debugging or other
purposes.
39) is recommended.
TDA8295
© NXP B.V. 2008. All rights reserved.
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