CXA2149 Sony Corporation, CXA2149 Datasheet - Page 15

• Manufacturer Part Number: CXA2149
• Description: US Audio Multiplexing Decoder
• Manufacturer: Sony Corporation

I
Status Register
Control Registers
Note.
1. The names CVOUT1, YCOUT1, AOUT1 etc., refer to the particular output or outputs that the register
2.
Status Register Descriptions
SYNC Detection Circuits Data1 Bit 6 (SYNC1) and Bit 7 (SYNC2)
Indicates whether a video signal is present or not. SYNC1 takes its input from TV and YOUT1. SYNC2 takes
its input from CVIN1 and YOUT2.
SYNC1 or SYNC2 bit
0
1
2
C Bus Register Assignment
Address
Address
controls.
Data1
Data1
Data2
Data3
Data4
Data5
Data6
Slave
Slave
Register undefined.
SYNC1
Control
Switch
Switch
Status
ZCD
GD1
LO0
1
1
AOUT3 Volume Control
SYNC2
AOUT3
Coarse
Control
Switch
status
Mute
GD2
Meaning
no SYNC
SYNC present
LO1
0
0
CVOUT1
SYNC1
Switch
Group
Delay
0
0
YCOUT1
AOUT1
SYNC2
—15—
Switch
1
1
AOUT3 Volume Control
Status
Mode
Fine
0
0
0
0
CVOUT2
YCOUT2
AOUT2
AOUT3
ADR
ADR
AOUT3L/R
Switch
CXA2149Q
POR
R/W
R/W