LMH0303SQE/NOPB National Semiconductor, LMH0303SQE/NOPB Datasheet - Page 7

• Manufacturer Part Number: LMH0303SQE/NOPB
• Description: IC CABLE DVR 3G HD/SD SDI 16LLP
• Manufacturer: National Semiconductor
• Type: Driverr

Specifications of LMH0303SQE/NOPB

• Applications: Amplifiers, Video Distribution
• Package / Case: 16-LLP
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Peak Reflow Compatible (260 C): Yes
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: LLP EP
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Mounting Type: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LMH0303SQETR

SMBus TRANSACTIONS
The device supports WRITE and READ transactions. See
Register Description table for register address, type (Read/
Write, Read Only), default value and function information.
WRITING A REGISTER
To write a register, the following protocol is used (see SMBus
2.0 specification).
1.
2.
3.
4.
5.
6.
7.
The WRITE transaction is completed, the bus goes IDLE and
communication with other SMBus devices may now occur.
READING A REGISTER
The Host drives a START condition, the 7-bit SMBus
address, and a “0” indicating a WRITE.
The Device (Slave) drives the ACK bit (“0”).
The Host drives the 8-bit Register Address.
The Device drives an ACK bit (“0”).
The Host drives the 8-bit data byte.
The Device drives an ACK bit (“0”).
The Host drives a STOP condition.
FIGURE 1. Application Circuit
7
To read a register, the following protocol is used (see SMBus
2.0 specification).
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. The Host drives a STOP condition.
Application Information
Figure 1
The Host drives a START condition, the 7-bit SMBus
address, and a “0” indicating a WRITE.
The Device (Slave) drives the ACK bit (“0”).
The Host drives the 8-bit Register Address.
The Device drives an ACK bit (“0”).
The Host drives a START condition.
The Host drives the 7-bit SMBus Address, and a “1”
indicating a READ.
The Device drives an ACK bit “0”.
The Device drives the 8-bit data value (register contents).
The Host drives a NACK bit “1”indicating end of the
READ transfer.
shows the application circuit for the LMH0303.
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