PRELIMINARY DATA SHEET
MSP 44x8G
Table 3–11: Write Registers on I2C Subaddress 12hex, continued
Register
Address
Function
Name
(continued)
FM Matrix Modes
FM_MATRIX
00 0Ehex
Defines the dematrix function for the demodulated FM signal
bit[7:0]
00hex
01hex
02hex
03hex
no matrix (used for bilingual and unmatrixed stereo sound)
German stereo (Standard B/G)
Korean stereo (also used for BTSC, EIA-J, and FM Radio)
sound A mono (left and right channel contain the mono
sound of the FM/AM mono carrier)
04hex
sound B mono (i.e. SAP)
In case of Automatic Sound Select, the FM Matrix Mode is set automatically,
i.e. the low-part of any I2C transmission to the register 00 0Ehex is ignored.
To enable a Forced Mono Mode for all analog stereo systems by overriding the
internal pilot or identification evaluation, the following steps must be transmitted:
1. MODUS with bit[0] = 0 (Automatic Sound Select off)
2. FM Presc./Matrix with FM Matrix = Sound A Mono (SAP: Sound B Mono)
3. Select FM/AM source channel, with channel matrix set to “Stereo” (transparent)
00 10hex
NICAM Prescale
PRE_NICAM
Defines the input prescale value for the digital NICAM signal
bit[15:8] 00hex ... 7Fhex prescale gain
examples:
00hex
20hex
5Ahex
7Fhex
off
0 dB gain
9 dB gain (recommendation)
+12 dB gain (maximum gain)
00 16hex
00 12hex
00 11hex
I2S1 Prescale
I2S2 Prescale
I2S3 Prescale
PRE_I2S1
PRE_I2S2
PRE_I2S3
Defines the input prescale value for digital I2S input signals
bit[15:8] 00hex ... 7Fhex prescale gain
examples:
00hex
10hex
7Fhex
off
0 dB gain (recommendation)
+18 dB gain (maximum gain)
00 0Dhex
SCART Input Prescale
PRE_SCART
Defines the input prescale value for the analog SCART input signal
bit[15:8] 00hex ... 7Fhex prescale gain
examples:
00hex
19hex
7Fhex
off
0 dB gain (2 VRMS input leads to digital full scale)
+14 dB gain (400 mVRMS input leads to digital full scale)
Micronas
27
MICRONAS [ MICRONAS ]
