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PRELIMINARY DATA SHEET
MSP 34x5G
Micronas
77
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 34x5D,
the MSP 34x5G offers
an Manual/Compatibility Mode, which provides sophis-
ticated programming of the MSP 34x5G.
Using the STANDARD SELECT register generally pro-
vides a more economic way to program the
MSP 34x5G and will result in optimal behavior.
There-
fore, it is not recommend to use the Manual/Com-
patibility mode.
In those cases, where the
MSP 34x5D is to be substituted by the MSP 34x5G,
the tips given in Section 6.9. on page 91 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
hex
; these registers are not readable!
Demodulator
Write Registers
Address
(hex)
MSP-
Version
Description
Reset
Mode
Page
AUTO_FM/AM
00 21
3415,
3455
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
00 00
79
A2_Threshold
00 22
all
A2 Stereo Identification Threshold
00 19
hex
81
CM_Threshold
00 24
all
Carrier-Mute Threshold
00 2A
hex
81
AD_CV
00 BB
all
SIF-input selection, configuration of AGC, and Carrier-Mute Function
00 00
82
MODE_REG
00 83
3415,
3455
Controlling of MSP-Demodulator and Interface options. As soon as this
register is applied, the MSP 34x5G works in the
MSP 34x5D compatibility
mode.
Warning: In this mode, BTSC, EIA-J, and FM-Radio are disabled.
Only
MSP 34x5D features are available; the use of MODUS and STATUS register
is not allowed.
The MSP 34x5G
is reset to the normal mode by first programming the
MODUS register followed by transmitting a valid standard code to the
STANDARD SELECTION register.
00 00
83
FIR1
FIR2
00 01
00 05
FIR1-filter coefficients channel 1 (6
8 bit)
FIR2-filter coefficients channel 2 (6
8 bit),
+
3
8 bit offset (total 72 bit)
00 00
85
DCO1_LO
DCO1_HI
DCO2_LO
DCO2_HI
00 93
00 9B
00 A3
00 AB
Increment channel 1 Low Part
Increment channel 1 High Part
Increment channel 2 Low Part
Increment channel 2 High Part
00 00
85
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.