CXA1734S
Description of Registers
Control registers
Number
Register
Classifi-
Contents
of bits
cation
ATT
4
6
4
4
6
6
6
A
A
A
A
A
A
A
Input level adjustment
STVCO
STEREO VCO free running frequency adjustment
SAP VCO free running frequency adjustment
SAP filter adjustment
SAPVCO
SAPLPF
STLPF
STEREO and dbx filter adjustment
SPECTRAL
WIDEBAND
Adjustment of stereo separation (3 kHz)
Adjustment of stereo separation (300 Hz)
Turn to DAC test mode and STVCO adjustment mode by means of
TEST-DA = 1.
TEST-DA
1
T
Turn to test mode by means of TEST = 1. (Adjustment of STLPF and
SAPLPF)
TEST1
NRSW
FOMO
M1
1
1
1
1
1
1
T
U
U
U
S
S
Selection of the output signal (STEREO mode , SAP mode)
Turn to forced MONO by means of FOMO = 1. (LOUT only is
MONO during SAP output.)
Selection of mute ON/OFF (0: mute ON, 1: mute OFF)
Selection of SAP mode or L + R mode according to the presence of
SAP broadcasting
SAPC
ATTSW
Turns the input stage MVCA off when ATTSW = 1.
Classification
U: User control
A: Adjustment
S: Proper to set
T: Test
Status registers
Register
PONRES
STEREO
SAP
Number of bits
Contents
1
1
1
1
1
1
1
1
POWER ON RESET detection;
1: RESET
1: Stereo
1: SAP
Stereo discrimination of the input signal;
SAP discrimination of the input signal;
Noise level discrimination of the input signal mode;
Status of STEREO filter adjustment;
Status of SAP filter adjustment;
NOISE
1: Noise
STLPF
1: OK range
1: OK range
SAPLPF
SAPVCO1
SAPVCO2
Status 1 of SAP VCO free running frequency adjustment; 0: OK range
Status 2 of SAP VCO free running frequency adjustment; 1: OK range
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