cxa2134q Sony Electronics, cxa2134q Datasheet - Page 23

• Manufacturer Part Number: cxa2134q
• Description: Us Audio Multiplexing Decoder
• Manufacturer: Sony Electronics

Decoder Output and Mode Control Table 2 (SAPC = 0)
(SAP) : The SAPOUT output signal is soft muted (approximately –7dB).
Note
Input signal mode
STEREO & SAP
MONO & SAP
1
: Don’t care.
STEREO
The signal is soft muted when NOISE = 1.
SAP or NOISE discrimination may be made during MONO or STEREO input when the noise is
input in the weak electric field.
Then microcomputer reads "NOISE" status from IC and decides whether SAP is output.
"NOISE" status rises earlier than "SAP" status when the amount of noise is increased to COMPIN.
MONO
1
1
ST
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Mode detection
SAP
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
NOISE
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
– 23 –
NRSW
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Mode control
FOMO
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SAPC
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
L – R
L – R
L – R
L – R
L – R
input
SAP
SAP
SAP
SAP
dbx
(SAP)
(SAP)
(SAP)
(SAP)
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
SAP
SAP
Lch
L
L
L
L
L
Output
CXA2134Q
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
(SAP)
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
L + R
SAP
SAP
SAP
SAP
Rch
R
R
R
R
R