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Reset Timing (RESET)

Earliest time

that M-State

could be exited

RESET

M-State

Start system

Determine SCLK rate

T0029-03

TAS5086

SLES131A – FEBRRUARY 2005 – REVISED MAY 2006

DETAILED DESCRIPTION (continued)

The TAS5086 has input multiplexers that allow any of the input channels to be routed to any PWM channel and

output multiplexers to enable any PWM output to be routed to any PWM output pin.

It also has individual channel dc-blocking filters that are enabled by default.

Individual channel de-emphasis filters for 32, 44.1, and 48 kHz are included and can be enabled and disabled.

sent to the left and right front channels (channels 1 and 2) and/or to the center and subwoofer (channels 5 and

6) as well.

A mixer on the subwoofer channel supports bass management configuration 1.

PWM output characteristics

•

Up to 8

× oversampling

•

12

× at f

•

4th-order noise shaping

•

≥105-dB dynamic range, 0–20 kHz (TAS5086 + TAS5186 system measured at speaker terminals)

•

THD < 0.06% (measured at TAS5086 outputs)

•

Adjustable maximum modulation limit of 93.8% to 99.2%

Control-signal parameters over recommended operating conditions (unless otherwise noted)

PARAMETER

MIN

TYP

MAX

UNIT

Time to M-STATE low

370

ns

Pulse duration, RESET active

400

None

ns

3

ms

Device start-up time

10

ms

NOTE: Because a crystal time base is used, the system determines the CLK rates. Once the data rate and master clock

ratio are determined, the system outputs audio if a master volume command is issued.

Figure 4. Reset Timing

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