CXA2126 Sony Corporation, CXA2126 Datasheet - Page 24

• Manufacturer Part Number: CXA2126
• Description: Audio/Video Switch with Electronic Volume for 2 Scart
• Manufacturer: Sony Corporation

I
IC Control Data Format
Key
EVC:
EVF:
TV Aud Mute: TV Audio mute. Controls the TV audio output buffer. (Same bit appears in data 1 & 7)
Z.C.D:
Vid_Switch 1: Selects the input video sources for Vout1, Vout2, Vout3, Vout4
Vid_Switch 2: Selects the input video sources for Vout5, Vout6
Aud_Switch 1: Selects one of 3 stereo inputs for RTV, LTV. PHONO_L, PHONO_R, MONO
Aud_Switch 2: Selects one of 3 stereo inputs for Rout1, Lout1
FNC:
FBLK:
LOGIC:
S: Start condition
Address = 90H
I
2
2
S
Address
Data1
Data2
Data3
Data4
Data5
Data6
Data7
C Data Interface Table
C Data Structure (write mode)
Slave address A
Not used
Not used
Not used
Not used
Electronic Volume Course (8dB steps)
Electronic Volume Fine (1dB steps)
Zero cross detector active. When ZCD = 1 volume and mute change at zero cross.
Video function switch control
Video Fast Blanking control
Logic outputs (open collector). 0 = high impedance. 1 = current sink mode.
TV Aud
Vout5
Mute
Mute
b7
1
A: Acknowledge
DATA1
Not used
Not used
Not used
Not used
Not used
TV Aud
Gain
EVC
b6
0
A
Not used
Vout6
on/off
b5
DATA2
0
P: Stop condition
Vid_Switch 1
Vid_Switch 2
Not used
– 24 –
Vout5
on/off
FBLK
mono
VCR
VCR
A
TV
b4
1
DATA3
Vout4
on/off
mono
EVF
TV
b3
0
A
Not used
DATA4
Vout3
on/off
b2
0
FNC
Aud_Switch 1
Aud_Switch 2
A
Not used
Not used
TV Aud
Vout2
on/off
Mute
VCR
TV
b1
0
DATAn
0 = Write
Not used
LOGIC
CXA2126Q
Z.C.D
Vout1
on/off
b0
A P