PRELIMINARY DATA SHEET
MSP 34x7G
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 34x7D, the MSP 34x7G offers
an Manual/Compatibility Mode, which provides sophis-
ticated programming of the MSP 34x7G.
Using the STANDARD SELECT register generally pro-
vides
a
more economic way to program the
MSP 34x7G 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 34x7D is to be substituted by the MSP 34x7G,
the tips given in Section 6.9. on page 75 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: 10hex; these registers are not readable!
Demodulator
Write Registers
Address MSP-
Description
Reset
Mode
Page
(hex)
Version
AUTO_FM/AM
00 21
3417,
3457
1. MODUS[0]=1 (Automatic Sound Select): Switching Level threshold of 00 00
Automatic Switching between NICAM and FM/AM in case of bad NICAM
reception
63
2. MODUS[0]=0 (Manual Mode): Activation and configuration of Automatic
Switching between NICAM and FM/AM in case of bad NICAM reception
A2_Threshold
CM_Threshold
AD_CV
00 22
00 24
00 BB
00 83
all
all
all
A2 Stereo Identification Threshold
00 19
65
65
66
68
hex
Carrier-Mute Threshold
00 2A
00 00
hex
SIF-input selection, configuration of AGC, and Carrier-Mute Function
MODE_REG
3417,
3457
Controlling of MSP-Demodulator and Interface options. As soon as this 00 00
register is applied, the MSP 34x7G works in the MSP 34x7D compatibility
mode.
Warning: In this mode, BTSC, EIA-J, and FM-Radio are disabled. Only
MSP 34x7D features are available; the use of MODUS and STATUS register
is not allowed.
The MSP 34x7G 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
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
00 00
69
69
DCO1_LO
DCO1_HI
00 93
00 9B
Increment channel 1 Low Part
Increment channel 1 High Part
DCO2_LO
DCO2_HI
00 A3
00 AB
Increment channel 2 Low Part
Increment channel 2 High Part
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.
Micronas
61
MICRONAS [ MICRONAS ]
