STV6412A(2003) 查看數據表（PDF） - STMicroelectronics
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STV6412A Datasheet PDF : 24 Pages
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STV6412A
3 I2C BUS SELECTION
Data transfers follow the usual I2C format; i.e. after the start condition (S), a 7-bit slave address is sent, fol-
lowed by an eight-bit data direction bit (W). An 8-bit sub-address is sent to select a register, followed by
an 8-bit data word to be included in the register. The IC’s I2C bus decoder enables the automatic incre-
mentation mode in write mode.
String Format
Write only mode (S = Start condition, P = Stop condition, A = Acknowledge)
S
SLAVE ADDRESS
0A
SUB-ADDRESS
A DATA A P
Read only mode
S
SLAVE ADDRESS
1 A DATA A P
Slave Address
Address
A6
Value
1
Auto Increment Mode
S SLAVE AD- 0
DRESS
A5
A4
A3
0
0
1
A SUB-ADDRESS A DATA0 A
Sub-Address
A2
A1
A0
0
1
X
DATA1 A .... DATAn A P
Sub-Address +1 Sub-Address + N
3.1 I2C Bus Addresses
Write Address: 1001 01X0, Read Address: 1001 01X1
Address Selection Pin Grounded: X = 0, write address = 94(hex), read address = 95(hex)
Address Selection Pin to Supply: X = 1, write address = 96(hex), read address = 97(hex)
Table 13. Input Signal Summary (Write Mode)
Reg
Data
Addr
(Hex)
d7
d6
d5
d4
d3
d2
d1
d0
AUDIO
00 TV Stereo
Mono
01
VCR Stereo
Mono
TV 0/6 dB
Not Used
TV Volume-62 dB to 0 dB - 2 dB steps
Soft Volume
Mode
VCR Audio
Switch Control
CINCH
Audio Gain
TV/CINCH Audio Switch Control
VIDEO
02
VCR Chroma
muted
03
RGB and FB
Tri-state
VCR Video and Chroma Switch Control
RGB Gain
TV Chroma
muted
TV Video and Chroma Switch Control
RGB Switch Control
Fast Blanking
Mode/Input Selection
MISCELLANEOUS
04 IT Enable SLB Mode
05
VCR Slow Blanking
Not Used
VCR-C VCR-C Gate RF Trap
Output Control Control Filter Control
RF Adder
Control
TV Slow Blanking
ENC Audio Input Gain VCR R/C
0/6/9 dB
sub Clamp
TV R or C
Output
Selection
ENC R/C
sub Clamp
STB-BY
06
RF
Outputs
TV
Outputs
CINCH
Outputs
VCR
Outputs
AUX
Inputs
TV
Inputs
VCR
Inputs
ENC
Inputs
Note 4: Unused data must be set to “0”.
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