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STV6413

I²C Bus Selection

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, followed 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 incrementation mode in write mode.

String Format

Write only mode (S = Start condition, P = Stop condition, A = Acknowledge)

Read only mode

Slave Address

Auto Increment Mode

3.1

I²C Bus Addresses

Write Address: 1001 0110 = 96(hex), Read Address: 1001 0111 = 97(hex)

S

Slave Address

0

A

Sub-address

A

Data

A

P

S

Slave Address

1

A

Data

A

P

Address

A7A6A5A4A3A2

A1

Value

1001011

S

Slave Address

0

A

Sub-address

A

Data0

A

Data1

A

...

Data n

A

P

Sub-address

Sub-address +1

Sub-address + N

Table 2: Input Signal Summary (Write Mode)

Reg.

Add.

Data

d7

d6

d5

d4

d3

d2

d1

d0

Audio

00h

TV Stereo

Mono

TV 0/6dB

TV Volume-62dB to 0 dB - 2dB steps

Soft Volume

Mode

01h

VCR Stereo

Mono

Not Used

(See Note 1)

VCR Audio

Switch Control

CINCH

Audio Gain

TV/CINCH Audio Switch Control

Video

02h

VCR Chroma

muted

VCR Video and Chroma Switch Control

TV Chroma

muted

TV Video and Chroma Switch Control

03h

RGB and FB

Tri-state

RGB Gain

RGB Switch Control

Fast Blanking

Mode/Input Selection