CXA2074S Sony Corporation, CXA2074S Datasheet - Page 30

• Manufacturer Part Number: CXA2074S
• Description: US Audio Multiplexing Decoder
• Manufacturer: Sony Corporation

Description of Mode Control
Priority ranking: M1/M2 > TVSW/EXT > TEST-DA > TEST1 > (NRSW & FOMO & SAPC)
Mode control
TVSW/EXT
TEST-DA
NRSW
M1/M2
TEST1
FOMO
SAPC
“Select dbx input and TV decoder output”
Conditions: FOMO = 0
NRSW = 0 (MONO or ST output)
• During ST input:
• During other input: left channel: L + R,
NRSW = 1 (SAP output)
• When there is “SAP” during SAP
• When there is “No SAP”, output is the
FOMO = 1
• During SAP output: left channel: L + R, right channel: SAP
• During ST or MONO output: left channel: L + R, right channel: L + R
SAPC = 0: Switch to SAP output when there is SAP discrimination.
SAPC = 1: Switch to SAP output regardless of whether there is SAP discrimination.
M1 = 0: LPOUT output is muted.
M2 = 0: LSOUT output is muted.
TVSW = 0: Set LPOUT output to TV mode.
TVSW = 1: Set LPOUT output to external input mode.
EXT = 0:
EXT = 1:
TEST1 = 1
Return adjustment data with STATUS REGISTER as an adjustment mode.
In addition, outputs are as follows.
left channel: SAP BPF OUT
right channel: NR BPF OUT
TEST-DA = 1
Used to adjust the D/A TEST and VCO.
left channel: D/A output
right channel: STVCO oscillation frequency (4f
discrimination
– left channel: SAP, right channel: SAP
same as when NRSW = 0.
Change the selection conditions for “MONO or ST output” and “SAP output”.
Do not switch to SAP output when there is no SAP discrimination.
Set LPOUT output to external input [1] mode. (TVSW = 1)
Set LPOUT output to external input [2] mode. (TVSW = 1)
SAPC = 0
left channel: L,
right channel: R
right channel: L + R
“TV mode/external input mode selection”
– 30 –
“Forced MONO”
“TEST-DA”
“TEST1”
“MUTE”
H
“Select dbx input and TV decoder 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, SAPOUT
output is soft muted (–7dB)
)
discrimination,
dbx input: “SAP”
left channel: SAP, right channel: SAP
SAPC = 1
CXA2074Q/S