cxa2074q Sony Electronics, cxa2074q Datasheet - Page 27

• Manufacturer Part Number: cxa2074q
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Status registers
Description of Control Registers
ATT (4):
VCO (6):
FILTER (6): Adjust the filter fo of the ST, SAP and dbx blocks.
SPECTRAL (6): Perform high frequency (fs = 3kHz) separation adjustment.
WIDEBAND (6): Perform low frequency (fs = 300Hz) separation adjustment.
TEST-DA (1): Set DAC output test mode and VCO adjustment mode.
PONRES
STEREO
SAP
NOISE
FILADJ
Register
Adjust the signal level input to COMPIN (Pin 17 (Pin 14)) to the standard input level (245mVrms).
Variable range of the input signal: 245mVrms –5.0dB to +3.0dB
0 = Level min.
F = Level max.
Adjust STEREO & SAP VCO free running frequency (fo).
Variable range: fo ±20%
0 = Free running frequency min.
3F = Free running frequency max.
Variable range: fo ±20%
0 = Frequency min.
3F= Frequency max.
0 = Level max.
3F = Level min.
0 = Level min.
3F = Level max.
0 = Normal mode
1 = DAC output test mode and VCO adjustment mode
In addition, the following outputs are present at Pins 40 and 39.
LPOUT-L (Pin 40): DA control DC level
LPOUT-R (Pin 39): STEREO VCO oscillation frequency (4f
Number of bits
1
1
1
1
1
POWER ON RESET detection;
Stereo discrimination of the COMPIN input signal;
SAP discrimination of the COMPIN input signal;
Noise level discrimination of the SAP signal;
Status of FILTER adjustment;
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Contents
H
)
1: RESET
1: Stereo
1: SAP
1: Noise
1: OK range
CXA2074Q/S