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SERIAL DATA INTERFACE REGISTER (0x04)

SYSTEM CONTROL REGISTER 2 (0x05)

TAS5086

SLES131A – FEBRRUARY 2005 – REVISED MAY 2006

As shown in Table 5, the TAS5086 supports nine serial data modes. The default is 24-bit, I2S mode.

Table 5. Serial Data Interface Control Register (0x04) Format

RECEIVE SERIAL DATA

WORD

D7–D4

D3

D2

D1

D0

INTERFACE FORMAT

LENGTHS

Right-justified

16

0000

0

0

0

0

Right-justified

20

0000

0

0

0

1

Right-justified

24

0000

0

0

1

0

16

0000

0

0

1

1

20

0000

0

1

0

0

24

0000

0

1

0

1

Left-justified

16

0000

0

1

1

0

Left-justified

20

0000

0

1

1

1

Left-justified

24

0000

1

0

0

0

Reserved

0000

1

0

0

1

Reserved

0000

1

0

1

0

Reserved

0000

1

0

1

1

Reserved

0000

1

1

0

0

Reserved

0000

1

1

0

1

Reserved

0000

1

1

1

0

Reserved

0000

1

1

1

1

Default values are in bold

Bit D6 is a control bit and bit D5 is a configuration bit.

When bit D6 is set low, the system starts playing; otherwise, the outputs are shut down.

Bit D5 defines the configuration of the system, i.e., it determines what configuration the system runs in when bit

D6 is set low. When this bit is asserted, the system is configured to surround, meaning all channels are

switching. Otherwise, only a subset of the PWMs runs, corresponding to a 2.0 or 2.1 configuration as

determined by the surround register (0x19).

Bit D5 should be changed only when bit D6 is set, meaning that it is only possible to switch configuration from

surround to 2.0/2.1 by resetting the TAS5086 and then restarting it again in the new configuration.

Table 6. System Control Register 2 (0x05)

D7

D6

D5

D4

D3

D2

D1

D0

FUNCTION

–

1

X

–

–

–

–

–

All channels are shut down (hard mute).

–

1

1

–

–

–

–

–

All channels are shut down (hard mute). VALID1 = 0 and VALID2 = 0

–

0

1

–

–

–

–

–

When D6 is deasserted, all channels are started. VALID1 = 1 and VALID2 = 1

–

0

0

–

–

–

–

–

When D6 is deasserted, all channels not belonging to shutdown group 1 are

started. VALID1 = 0 and VALID2 = 1

25

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