PRELIMINARY DATA SHEET
MSP 44x8G
6.5. Manual Mode:
6.5.3. FM Adaptive Deemphasis
Description of DSP Write Registers
FM Adaptive
Deemphasis WP1
00 0Fhex
L
6.5.1. Additional Channel Matrix Modes
OFF
WP1
0000 0000
RESET
00hex
3Fhex
Main Matrix
Aux Matrix
00 08hex
00 09hex
00 0Ahex
00 41hex
00 0Bhex
00 0Chex
L
L
L
L
L
L
0011 1111
SCART1 Matrix
SCART2 Matrix
I2S Matrix
Note: The Adaptive Deemphasis WP1 requires setting
of fixed deemphasis to 75µs.
6.5.4. NICAM Deemphasis
Quasi-Peak
Detector Matrix
A J17 Deemphasis is always applied to the NICAM sig-
nal. It is not switchable.
SUM/DIFF
0100 0000
0101 0000
0110 0000
0111 0000
1000 0000
1001 0000
40hex
50hex
60hex
70hex
80hex
90hex
AB_XCHANGE
PHASE_CHANGE_B
PHASE_CHANGE_A
A_ONLY
6.5.5. Identification Mode for A2 Stereo Systems
Identification Mode
00 15hex
L
Standard B/G
(German Stereo)
0000 0000
RESET
00hex
B_ONLY
Standard M
(Korean Stereo)
0000 0001
01hex
3Fhex
This table shows additional modes for the channel
matrix registers.
Reset of Ident-Filter
0011 1111
The sum/difference mode can be used together with
the quasi-peak detector to determine the sound mate-
rial mode. If the difference signal on channel B (right)
is near to zero, and the sum signal on channel A (left)
is high, the incoming audio signal is mono. If there is a
significant level on the difference signal, the incoming
audio is stereo.
To shorten the response time of the identification algo-
rithm after a program change between two FM-Stereo
capable programs, the reset of the ident-filter can be
applied.
Sequence:
1. Program change
2. Reset ident-filter
6.5.2. FM Fixed Deemphasis
3. Set identification mode back to standard B/G or M
4. Read stereo detection register
FM Deemphasis
00 0Fhex
H
50 µs
0000 0000
RESET
00hex
75 µs
0000 0001
0011 1111
01hex
3Fhex
OFF
Micronas
79
MICRONAS [ MICRONAS ]
