STV6412A

13/24

lowed by an eight-bit data direction bit (W). An 8-bit sub-address is sent to select a register, followed by

mentation 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

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)

AUDIO

VIDEO

MISCELLANEOUS

STB-BY

Note 4: Unused data must be set to “0”.

S

SLAVE ADDRESS

0

A

SUB-ADDRESS

A

DATA

A

P

S

SLAVE ADDRESS

1

A

DATA

A

P

Address

A6

A5

A4

A3

A2

A1

A0

Value

10010

1

X

S

SLAVE AD-

DRESS

0

A

SUB-ADDRESS

A

DATA0

A

DATA1

A

....

DATAn

A

P

Sub-Address

Sub-Address +1

Sub-Address + N

Reg

Addr

(Hex)

Data

d7

d6

d5

d4

d3

d2

d1

d0

00

TV Stereo

Mono

TV 0/6 dB

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

Soft Volume

Mode

01

VCR Stereo

Mono

Not Used

VCR Audio

Switch Control

CINCH

Audio Gain

TV/CINCH Audio Switch Control

02

VCR Chroma

muted

VCR Video and Chroma Switch Control

TV Chroma

muted

TV Video and Chroma Switch Control

03

RGB and FB

Tri-state

RGB Gain

RGB Switch Control

Fast Blanking

Mode/Input Selection

04

IT Enable

SLB Mode

Not Used

VCR-C

Output Control

VCR-C Gate

Control

RF Trap

Filter Control

RF Adder

Control

TV R or C

Output

Selection

05

VCR Slow Blanking

TV Slow Blanking

ENC Audio Input Gain

0/6/9 dB

VCR R/C

sub Clamp

ENC R/C

sub Clamp

06

RF

Outputs

TV

Outputs

CINCH

Outputs

VCR

Outputs

AUX

Inputs

TV

Inputs

VCR

Inputs

ENC

Inputs