TAS5706
www.ti.com
SLOS550A–DECEMBER 2007–REVISED DECEMBER 2007
RESET TIMING (RESET)
Control signal parameters over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
TYP
300
1
MAX
UNIT
td(VALID_LOW)
tw(RESET)
td(I2C_ready)
td(run)
Time to assert VALID (reset to power stage) low
Pulse duration, RESET active
ns
ms
ms
ms
Time to enable I2C
3.5
Device start-up time (after start-up command via I2C)
10
RESET
Earliest time
that hard mute
could be exited
tw(RESET)
VALID
td(I2C_ready)
td(run)
Start system
td(VALID_LOW) £ 300 ns
System initialization.
Enable via I2C.
T0029-05
Figure 4. Reset Timing
POWER-DOWN (PDN) TIMING
Control signal parameters over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
TYP
725
120
800
MAX
UNIT
µs
td(VALID_LOW)
td(STARTUP)
tw
Time to assert VALID (reset to power stage) low
Device startup time
ms
ns
Minimum pulse duration required
PDN
tw
VALID
td(STARTUP)
td(VALID_LOW) £ 300 ms
T0030-04
Figure 5. Power-Down Timing
BACK-END ERROR (BKND_ERR)
Control signal parameters over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
TYP
MAX UNIT
tw(ER)
Pulse duration, BKND_ERR active (active-low)
350 None
ns
ms
ns
tp(valid_high)
Programmable. Time to stay in the OUT_x low state. After tp(valid_high), the TAS5706
attempts to bring the system out of the OUT_x low state if BKND_ERR is high. Refer
Reg 0x1C
tp(valid_low)
Time TAS5706 takes to bring OUT_x low after BKND_ERR assertion.
350
14
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