CS5460 Просмотр технического описания (PDF) - Cirrus Logic

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CS5460

Single Phase Bi-Directional Power/Energy IC

Cirrus Logic 

CS5460

3.1 Command Word (Write Only)

All command words are always 1 byte in length. Commands that write to a register initiate 3 bytes of register data.

Commands that read from registers must be followed by 1, 2, or 3 bytes of register read data. Commands that read

data can be chained with other commands (e.g., while reading data, a new command can be sent to SDI which can

execute before the original read is completed). This allows for “chaining” commands.

3.1.1 Start Conversions

B7 B6 B5 B4 B3 B2 B1 B0

1

1

1

0

C

0

0

0

This command indicates to the state machine to begin acquiring measurements and calculating results. The de-

vice has two modes of acquisition.

C

Modes of measurement

0 = Perform a single computation cycle

1 = Perform continuous computation cycles

3.1.2 SYNC0 Command

B7 B6 B5 B4 B3 B2 B1 B0

1

1

1

1

1

1

1

0

This command is the end of the serial port re-initialization sequence. The command can also be used as a NOP

command. The serial port is resynchronized to byte boundaries by sending three or more consecutive SYNC1

commands followed by a SYNC0 command.

3.1.3 SYNC1 Command

B7 B6 B5 B4 B3 B2 B1 B0

1

1

1

1

1

1

1

1

This command is part of the serial port re-initialization sequence. The command can also serve as a NOP com-

mand, but no more than three consecutive bytes should be transmitted.

3.1.4 Power-up/Halt Control

B7 B6 B5 B4 B3 B2 B1 B0

1

0

1

0

0

0

0

0

If the device is powered-down, this command will power-up the device. When powered-on, no computations will

be running. If the part is already powered-on, all computations will be halted.

DS279PP5

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