MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 85

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

PRELIMINARY DATA SHEET
6. Appendix B: Manual/Compatibility Mode
To adapt the modes of the STANDARD SELECT regis-
ter to individual requirements and for reasons of com-
patibility to the MSP 34x0D, the MSP 34x1G offers
an Manual/Compatibility Mode, which provides sophis-
ticated programming of the MSP 34x1G.
Using the STANDARD SELECT register generally pro-
vides a more economic way to program the
MSP 34x1G and will result in optimal behavior. There-
fore, it is not recommend to use the Manual/Com-
patibility
MSP 34xxD is to be substituted by the MSP 34x1G,
the tips given in Section 6.10. on page 101 have to be
obeyed by the controller software.
6.1. Demodulator Write and Read Registers for Manual/Compatibility Mode
Table 6–1: Demodulator Write Registers; Subaddress: 10
Micronas
Demodulator
Write Registers
AUTO_FM/AM
A2_Threshold
CM_Threshold
AD_CV
MODE_REG
FIR1
FIR2
DCO1_LO
DCO1_HI
DCO2_LO
DCO2_HI
PLL_CAPS
Note: All registers except AUTO_FM/AM, A2_Threshold, and CM_Threshold are initialized during STANDARD SELECTION and are
automatically updated when Automatic Sound Select (MODUS[0]=1) is on.
mode.
Address
(hex)
00 21
00 22
00 24
00 BB
00 83
00 01
00 05
00 93
00 9B
00 A3
00 AB
00 1F
In
those
MSP-
Version
3411,
3451
all
all
all
3411,
3451
cases,
Description
1. MODUS[0]=1 (Automatic Sound Select): Switching Level threshold of
Automatic Switching between NICAM and FM/AM in case of bad NICAM
reception
2. MODUS[0]=0 (Manual Mode): Activation and configuration of Automatic
Switching between NICAM and FM/AM in case of bad NICAM reception
A2 Stereo Identification Threshold
Carrier-Mute Threshold
SIF-input selection, configuration of AGC, and Carrier-Mute Function
Controlling of MSP-Demodulator and Interface options. As soon as this
register is applied, the MSP 34x1G works in the MSP 34x0D Compatibility
Mode.
Warning: 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 transmitting a valid standard code to the
STANDARD SELECTION register.
FIR1-filter coefficients channel 1 (6 8 bit)
FIR2-filter coefficients channel 2 (6 8 bit),
Increment channel 1 Low Part
Increment channel 1 High Part
Increment channel 2 Low Part
Increment channel 2 High Part
Not of interest for the customer
Switchable PLL capacitors to tune open-loop frequency
where
the
hex
; these registers are not readable!
3 8 bit offset (total 72 bit)
MSP 34x1G
Reset
Mode
00 00
00 19
00 2A
00 00
00 00
00 00
00 00
00 56
hex
hex
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