TMD37827 datasheet(17/34 Pages) AMSCO

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Datasheet - Mar. 2013 - V2

TMD3782 – 17

The command registers specifies the address of the target

interrupt sources.

Figure TMD3782 – 25:

Command Register

COMMAND

TYPE

ADD

Fields

Bits

Description

COMMAND

Select Command Register. Must write as 1 when addressing COMMAND register.

TYPE

6:5

Selects type of transaction to follow in subsequent data transfers:

FIELD VALUE

TRANSACTION TYPE

Repeated byte protocol transaction

Auto-increment protocol transaction

Reserved — Do not use

Special function — See description below

Byte protocol will repeatedly read the same register with each data access. Block

protocol will provide auto-increment function to read successive bytes.

ADD

4:0

Address field/special function field. Depending on the transaction type, see above,

this field either specifies a special function command or selects the specific

control−status−register for following write and read transactions. The field values

listed below apply only to special function commands:

FIELD VALUE

SPECIAL FUNCTION

00000

Normal —no action

00101

Proximity interrupt clear

00110

Clear channel interrupt clear

00111

Proximity and Clear interrupt clear

other

Reserved — Do not write

Clear channel/Proximity Interrupt Clear. Clears any pending Clear/Proximity

interrupt. This special function is self clearing.

Command Register

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