TDA9875 Philips Semiconductors, TDA9875 Datasheet - Page 35

• Manufacturer Part Number: TDA9875
• Description: Digital TV Sound Processor DTVSP
• Manufacturer: Philips Semiconductors

Philips Semiconductors
10.3.3
10.3.3.1
This register is used to define the signal source, the level of which is to be monitored, and if the peak level is to be
monitored. Peak level refers to the magnitude of the maximum excursion of a signal. Data can be read-out in the I
slave transmitter mode (see Section 10.4, subaddresses 5 and 6).
Audio magnitude/phase is related to the FM demodulator output. Phase information is provided, when it operates in
FM mode, while magnitude is supplied in AM mode.
Table 15 Description of bit PEAKMON
10.3.3.2
Table 16 Subaddress 2 (notes 1, 2 and 3)
Notes
1. X = don’t care.
2. PEAKMON is described in Section 10.3.3.1.
3. The default setting at power-up is 00000000.
Table 17 Signal source (note 1)
Note
1. The term ‘crossbar’ refers to the digital selector, where level-adjusted signals from various sources are available.
1998 Feb 13
PEAKMON
PEAKMON
Digital TV Sound Processor (DTVSP)
NAME
MSB
B2
B7
0
0
0
0
1
1
1
1
M
ONITOR SELECT REGISTER
Description
Definition
HIGH/LOW
HIGH
LOW
B1
B6
X
0
0
1
1
0
0
1
1
selects the peak level of a source to be monitored
the last sample will be supplied
B0
B5
X
0
1
0
1
0
1
0
1
DC output of FM demodulator
audio magnitude/phase, FM demodulator output
crossbar input from FM/AM channel
crossbar input from NICAM channel
crossbar input from I
crossbar input from I
crossbar input from audio ADC channel
input to Main channel DAC (without beeper)
B4
see Table 18
35
B3
2
2
S1 channel
S2 channel
FUNCTION
SIGNAL SOURCE
B2
see Table 17
Preliminary specification
B1
TDA9875
LSB
B0
2
C-bus