cxa1734s Sony Electronics, cxa1734s Datasheet - Page 23

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

Description of Mode Control
Mode control
Priority ranking: TEST-DA > TEST1 > M1 > (NRSW & FOMO & SAPC)
TEST-DA
NRSW
FOMO
TEST1
SAPC
M1
“Select dbx input and LOUT & ROUT output”
Conditions: FOMO = 0
NRSW = 0 (MONO or ST output)
• During ST input:
• During other input:
NRSW = 1 (SAP output)
• When there is “SAP” during SAP
• When there is “No SAP”, output is the same
as when NRSW = 0.
discrimination
FOMO = 1
• During SAP output: LOUT: L + R, ROUT: SAP
• During ST or MONO output: LOUT: L + R, ROUT: L + R
Change the selection conditions for “MONO or ST output” and “SAP output”.
M1 = 0
Output is muted.
TEST1 = 1
Return adjustment data with STATUS REGISTER as an adjustment mode.
In addition, outputs are as follows.
TEST-DA = 1
Used to TEST of D/A.
SAPC = 0:
SAPC = 1:
LOUT: SAP BPF OUT
ROUT: NR BPF OUT
LOUT: D/A output
ROUT: STVCO oscillation frequency (4 f
LOUT: SAP, ROUT: SAP
SAPC=0
Switch to SAP output when there is SAP discrimination.
Do not switch to SAP output when there is no SAP discrimination.
Switch to SAP output regardless of whether there is SAP
discrimination.
LOUT : L,
ROUT : R
LOUT : L + R,
ROUT : L + R
—23—
“Forced MONO”
“TEST-DA”
“TEST1”
“MUTE”
H
)
“Select dbx input and LOUT & ROUT output”
Conditions: FOMO = 0
NRSW = 0 (MONO or ST output)
As on the left
NRSW = 1 (SAP output)
• Regardless of the presence of SAP
However, when there is no SAP, SAPLPF
output is soft muted (–7 dB)
discrimination,
dbx input: “SAP”
LOUT: SAP, ROUT: SAP
SAPC=1
CXA1734S