cxa1734s Sony Electronics, cxa1734s Datasheet - Page 21

• Manufacturer Part Number: cxa1734s
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Description of Control Registers
ATT (4):
STVCO (6):
SAPVCO (4):
SAPLPF (4):
STLPF (6):
SPECTRAL (6): Perform high frequency (fs = 3 kHz) separation adjustment.
WIDEBAND (6): Perform low frequency (fs = 300 Hz) separation adjustment.
TEST1 (1):
TEST-DA (1):
Adjust the signal level input to COMPIN (Pin 11) to the reference level (245 mVrms).
Variable range of the input signal: 245 mVrms –5.0 dB to +3.0 dB
0 = Level min.
F = Level max.
Adjust STEREO VCO free running frequency (f
Variable range:
0 = Free running frequency min.
3F = Free running frequency max.
Adjust SAPVCO free running frequency (f
Variable range:
0 = Free running frequency min.
F = Free running frequency max.
Adjust the filter f
Variable range:
0 = Frequency min.
F = Frequency max.
Adjust the filter f
Variable range:
0 = Frequency min.
3F = Frequency max.
0 = Level max.
3F = Level min.
0 = Level min.
3F = Level max.
Set filter adjustment mode.
0 = Normal mode
1 = STLPF (STA3) and SAPLPF (STA4) adjustment mode
In addition, the following outputs are present at Pins 28 and 29.
LOUT (Pin 29):
ROUT (Pin 28):
Set DAC output test mode and STVCO adjustment mode.
0 = Normal mode
1 = DAC output test mode and STVCO adjustment mode
LOUT (Pin 29):
ROUT (Pin 28):
0
0
of the SAP block.
of the ST and dbx blocks.
SAP BPF OUT
NR BPF OUT
DA control DC level
STEREO VCO oscillation frequency (4 f
—21—
f
f
f
f
0
0
0
0
±20%
±20%
±20%
±20%
0
).
0
).
H
)
CXA1734S