TAS5705
www.ti.com ...................................................................................................................................................................................................... SLOS549–JUNE 2008
BACK-END ERROR (BKND_ERR)
Control signal parameters over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
TYP
MAX UNIT
tw(ER)
Minimum pulse duration, BKND_ERR active (active-low)
350
ns
tp(valid_high)
Programmable. Time to stay in the VALID (reset to the power stage) low state. After
tp(valid_high), the TAS5705 attempts to bring the system out of the VALID low state if
BKND_ERR is high.
300
400
ms
ns
tp(valid_low)
Time TAS5705 takes to bring VALID (reset to the power stage) low after BKND_ERR
assertion.
tw(ER)
BKND_ERR
VALID
Normal
Operation
Normal
Operation
tp(valid_high)
tp(valid_low)
T0031-04
Figure 9. Error Recovery Timing
MUTE TIMING (MUTE)
Control signal parameters over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
TYP
1024
MAX UNIT
Volume ramp time (= number of steps × step size). Number of steps is defined by volume
configuration register 0x0E (see Volume Configuration Register). Step size = 4 LRCLKs if
S ≤ 48 kHz; else 8 LRCLKs if fS ≤ 96 kHz ; else 16 LRCLKs
td(VOL)
steps
f
MUTE
Normal
Operation
Normal
Operation
VOLUME
td(VOL)
td(VOL)
50-50
Duty Cycle
T0032-03
Figure 10. Mute Timing
Copyright © 2008, Texas Instruments Incorporated
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