TEF6903AH/V5S,518 NXP Semiconductors, TEF6903AH/V5S,518 Datasheet - Page 70

• Manufacturer Part Number: TEF6903AH/V5S,518
• Description: IC CAR RADIO SGL CHIP CIRC 80QFP
• Manufacturer: NXP Semiconductors

Specifications of TEF6903AH/V5S,518

• Modulation Or Protocol: AM, FM, WB
• Applications: AM/FM Radio Receiver
• Current - Receiving: 102mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 8 V ~ 9 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Frequency: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935288823518

NXP Semiconductors
TEF6904A_3
Product data sheet
8.2.25 Write mode: data byte LOUDNESS
Table 98.
Table 99.
[1]
Table 100. VU-meter timing; HTC[2:0] of data byte 0Bh; TIMING
[1]
Bit
7
6
5
4
3
2 to 0
HTC2
0
0
0
0
1
1
1
1
AVUM
The VU-meter mode can be used with external sources only. When the VU-meter mode is active, the radio
quality detection of USN, MOD and offset is limited to AF update tuning only. During VU-meter mode the
bits MOD[4:0] indicate the external source input amplitude. The FM dynamic bandwidth control is disabled
and a fixed bandwidth of 113 kHz is defined. However, other fixed bandwidth settings are available by
DYN = 0 and the setting of BW; data byte 0h (see
control. VU-meter mode is automatically activated when audio compression is on (COMP = 1).
Setting HTC[2:0] is also in use for setting the timing of weak signal high cut control during radio operation.
7
0
LOUDNESS - format of data byte 17h with default setting
LOUDNESS - data byte 17h bit description
Symbol
AVUM
ASFD
-
LDON
LDHB
LDS[2:0]
ASFD
6
0
HTC1
0
0
1
1
0
0
1
1
Description
audio VU-meter mode
ASI filter disable
reserved; 0 = normal operation
loudness on
loudness high boost; see
loudness start setting; loudness start defines the volume setting below
which loudness control is activated; see
Rev. 03 — 20 March 2008
0 = MOD read information indicates the modulation of the radio
channel
1 and an external input source is selected = MOD read information will
indicate the input amplitude of the selected source
0 = normal operation
1 = no low-pass filter inserted during ASI
0 = loudness control is disabled
1 = loudness control is active; loudness is controlled by the volume
setting
0 = loudness control is limited to bass gain
1 = loudness controls bass gain and treble gain
5
0
LDON
HTC0
0
1
0
1
0
1
0
1
4
0
[1]
Table
Figure 38
LDHB
28). See
3
1
t
0.02 s
0.02 s
0.02 s
0.02 s
0.02 s
0.02 s
0.02 s
0.02 s
attack
Table 100
LDS2
Table 101
2
1
[1]
for compression recovery timing
TEF6904A
Integrated car radio
and
LDS1
© NXP B.V. 2008. All rights reserved.
1
0
t
0.03 s
0.06 s
0.2 s
5 s
0.6 s
10 s
1 s
2 s
Figure 38
recovery
LDS0
70 of 108
0
0