lnbh221 STMicroelectronics, lnbh221 Datasheet - Page 13

• Manufacturer Part Number: lnbh221
• Description: Dual Lnb Supply And Control Ic With Step-up Converter And I2c Interface
• Manufacturer: STMicroelectronics

LD39150
6
6.1
6.2
S
MSB
R, W
PCL
0
MSB
0
LNBH221 software description (same for both
section)
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
R, W
TTX
0
CHIP ADDRESS
1
0
R, W
TEN
0
0
LSB
R/W ACK
R, W
LLC
LNBH221 software description (same for both section)
MSB
VSEL
R, W
R, W
EN
DATA
OTF
R
LSB
ACK
LSB
OLF
R
13/27
P