TAS5705PAPR datasheet(24/71 Pages) TI

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2C-COMPATIBLE SERIAL CONTROL INTERFACE

TAS5705

SLOS549 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com

The TAS5705 DAP has an I2C serial control slave interface to receive commands from a system controller. The

serial control interface supports both normal-speed (100-kHz) and high-speed (400-kHz) operations without wait

states. As an added feature, this interface operates even if MCLK is absent.

The serial control interface supports both single-byte and multibyte read and write operations for status registers

and the general control registers associated with the PWM.

The I2C interface supports a special mode which permits I2C write operations to be broken up into multiple

data-write operations that are multiples of 4 data bytes. These are 6-, 10-, 14-, 18-, ... etc., -byte write operations

that are composed of a device address, read/write bit, subaddress, and any multiple of 4 bytes of data. This

permits the system to write large register values incrementally without blocking other I2C transactions.

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