TAS5705
SLOS549–JUNE 2008...................................................................................................................................................................................................... www.ti.com
START/STOP PERIOD REGISTER (0x1A)
This register is used to control the soft-start and soft-stop period when starting up or shutting down channels.
The value in this register determines the time for which the PWM inputs switch at 50% duty cycle. This helps
reduce pops and clicks at start-up and shutdown.
D7 is used to configure the output stage in a bridge-tied mode or a single-ended mode.
Table 21. Start/Stop Period Register (0x1A)
D7
0
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
D6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
D5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
D4
–
–
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D3
–
–
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D2
–
–
–
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D1
–
–
–
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D0
–
–
–
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FUNCTION
Bridge-tied load (BTL)
Single-ended load (SE)
No 50% duty-cycle start/stop period
16.5-ms 50% duty-cycle start/stop period
23.9-ms 50% duty-cycle start/stop period
31.4-ms 50% duty-cycle start/stop period
40.4-ms 50% duty-cycle start/stop period
53.9-ms 50% duty-cycle start/stop period
70.3-ms 50% duty-cycle start/stop period
94.2-ms 50% duty-cycle start/stop period
125.7-ms 50% duty-cycle start/stop period
164.6-ms 50% duty-cycle start/stop period
239.4-ms 50% duty-cycle start/stop period
314.2-ms 50% duty-cycle start/stop period
403.9-ms 50% duty-cycle start/stop period
538.6-ms 50% duty-cycle start/stop period
703.1-ms 50% duty-cycle start/stop period
942.5-ms 50% duty-cycle start/stop period
1256.6-ms 50% duty-cycle start/stop period
1728.1-ms 50% duty-cycle start/stop period
2513.6-ms 50% duty-cycle start/stop period
3299.1-ms 50% duty-cycle start/stop period
4241.7-ms 50% duty-cycle start/stop period
5655.6-ms 50% duty-cycle start/stop period
7383.7-ms 50% duty-cycle start/stop period
9897.3-ms 50% duty-cycle start/stop period
13,196.4-ms 50% duty-cycle start/stop period
56
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