MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 91

• Manufacturer Part Number: MSP3421G
• Description: Multistandard Sound Processor Family with Virtual Dolby Surround
• Manufacturer: MICRONAS [Micronas]

PRELIMINARY DATA SHEET
Table 6–11: AD_CV parameters for Constant Input Gain (AD_CV[7]=0)
6.3.5. Register MODE_REG
Note: The use of this register is no longer recom-
mended. It should be used only in cases where soft-
ware compatibility to the MSP 34x0D is required.
Using the STANDARD SELECTION register together
with the MODUS register provides a more economic
way to program the MSP 34x1G.
As soon as this register is applied, the MSP 34x1G
works in the MSP 34x0D Manual/Compatibility
Mode. In this mode, BTSC, EIA-J, and FM-Radio are
disabled. Only MSP 34x0D features are available; the
use of MODUS and STATUS register is not allowed.
The MSP 34x1G is reset to the normal mode by first
programming the MODUS register, followed by trans-
mitting a valid standard code to the STANDARD
SELECTION register.
The register ‘MODE_REG’ contains the control bits
determining the operation mode of the MSP 34x1G in
the MSP 34x0D Manual/Compatibility Mode; Table 6–
12 explains all bit positions.
Micronas
Step
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1)
For signals above 1.4 V
robustness of the internal processing, the IC works up to and even more than 3 V
FM1/FM2 ratio are supposed. In this overflow case, a loss of FM-S/N ratio of about 10 dB may appear.
AD_CV [6:1]
Constant Gain
000000
000001
000010
000011
000100
000101
000110
000111
001000
001001
001010
001011
001100
001101
001110
001111
010000
010001
010010
010011
010100
pp
, the minimum gain of 3 dB is switched and overflow of the A/D converter may result. Due to the
Gain
10.65 dB
11.50 dB
12.35 dB
13.20 dB
14.05 dB
14.90 dB
15.75 dB
16.60 dB
17.45 dB
18.30 dB
19.15 dB
20.00 dB
3.00 dB
3.85 dB
4.70 dB
5.55 dB
6.40 dB
7.25 dB
8.10 dB
8.95 dB
9.80 dB
Input Level at pin ANA_IN1 and ANA_IN2
maximum input level: 3 V
maximum input level: 0.14 V
pp
, if norm conditions of FM/NICAM or
pp
(FM) or 1 V
pp
MSP 34x1G
pp
(NICAM)
1)
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