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SURROUND REGISTER (0x19)

TAS5086

SLES131 – FEBRUARY 2005

Table 11. PWM Start Register (continued)

D7

D6

D5

D4

D3

D2

D1

D0

FUNCTION

–

–

–

1

–

–

–

–

Start channel 5 under part 1 of the start

–

–

–

0

–

–

–

–

Start channel 5 under part 2 of the start

–

–

–

–

1

–

–

–

Start channel 4 under part 1 of the start

–

–

–

–

0

–

–

–

Start channel 4 under part 2 of the start

–

–

–

–

–

1

–

–

Start channel 3 under part 1 of the start

–

–

–

–

–

0

–

–

Start channel 3 under part 2 of the start

–

–

–

–

–

–

1

–

Start channel 2 under part 1 of the start

–

–

–

–

–

–

0

–

Start channel 2 under part 2 of the start

–

–

–

–

–

–

–

1

Start channel 1 under part 1 of the start

–

–

–

–

–

–

–

0

Start channel 1 under part 2 of the start

Defines which channels should be running in the 2.0/2.1 mode.

The channels having their surround register set belongs to shut down group 1 are associated with Valid 1. Valid

1 is the signal we bring low to disable channels when the system is operating in for example stereo mode or 2.1

mode.

Example: If,

PWM_1 connects to Front Left

PWM_2 connects to Front Right

PWM_3 connects to Surround Left

PWM_4 connects to Surround Right

PWM_5 connects to Center

PWM_6 connects to Sub

And you have a 2.1 mode, then VALID1 connects to reset of Surround Left, Surround Right, and Center. VALID2

connects to reset of Front Left, Front Right, and Sub.

That means that Surround Register (0x19) is loaded with 0b00011100 = 0x1C.

Important Note: You must always change channel modes with all channels shutdown (Reg. 0x05 = 60).

Table 12. Surround Register

D7

D6

D5

D4

D3

D2

D1

D0

FUNCTION

–

–

1

–

–

–

–

–

PWM_6 belongs to shut down group 1 (VALID1)

–

–

0

–

–

–

–

–

PWM_6 belongs to shut down group 2 (VALID2)

–

–

–

1

–

–

–

–

PWM_5 belongs to shut down group 1 (VALID1)

–

–

–

0

–

–

–

–

PWM_5 belongs to shut down group 2 (VALID2)

–

–

–

–

1

–

–

–

PWM_4 belongs to shut down group 1 (VALID1)

–

–

–

–

0

–

–

–

PWM_4 belongs to shut down group 2 (VALID2)

–

–

–

–

–

1

–

–

PWM_3 belongs to shut down group 1 (VALID1)

–

–

–

–

–

0

–

–

PWM_3 belongs to shut down group 2 (VALID2)

–

–

–

–

–

–

1

–

PWM_2 belongs to shut down group 1 (VALID1)

–

–

–

–

–

–

0

–

PWM_2 belongs to shut down group 2 (VALID2)

–

–

–

–

–

–

–

1

PWM_1 belongs to shut down group 1 (VALID1)

–

–

–

–

–

–

–

0

PWM_1 belongs to shut down group 2 (VALID2)

23