LNBH21

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LNBH21 SOFTWARE DESCRIPTION

INTERFACE PROTOCOL

The interface protocol comprises:

- A start condition (S)

- A chip address byte = hex 10 / 11 (the LSB bit determines read(=1)/write(=0) transmission)

- A sequence of data (1 byte + acknowledge)

- A stop condition (P)

ACK= Acknowledge; S = Start ; P = Stop; R/W = Read/Write

SYSTEM REGISTER (SR, 1 BYTE)

R,W = read and write bit; R = Read-only bit

All bits reset to 0 at Power-On

CHIP ADDRESS

DATA

MSB

LSB

MSB

LSB

S

0001000

R/W ACK

ACK

P

MSB

LSB

R, W

R, W

R, W

R, W

R, W

R, W

R

R

PCL

TTX

TEN

LLC

VSEL

EN

OTF

OLF